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Below are final entrants for the 2022 Lottery (December 4, 2021). The Ticket Count refers to the fact that lottery applicants receive additional chances in the drawing for each failure to gain entry in a prior year at 2^(n-1) where n is the number of years entering the lottery. These are final ticket counts.
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| ID | Last Name | First Name | Gender | State | Country | Tickets | Qualifier |
|---|---|---|---|---|---|---|---|
| 105955 | Aagaard | Jakob | M | NJ | US | 16 | Mozart 100 108k 2021 (22 hours) |
| 107793 | Aamold | Michael | M | Colorado | US | 1 | Yeti 100m 2021 (Finisher) |
| 102073 | Aanerud | Eric | M | WY | US | 2 | Bear, The 100m 2021 (Finisher) |
| 105518 | Abbal | Nicolas | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102103 | Abbey | Angela | F | CALIFORNIA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 107632 | Abel | Sylvie | F | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 103933 | Abel | William | M | IL | US | 64 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 109592 | Abele Plaza | Christian | M | Madrid | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109036 | Abramson | Sarah | F | Colorado | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108638 | Abrasley | Robyn | F | FL | US | 1 | Yeti 100m 2021 (Finisher) |
| 108118 | Abriola | Jim | M | Pa | US | 1 | Eastern States 100m 2021 (Finisher) |
| 101958 | Acciarito | Steve | M | CA | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 104555 | Acer | Mike | M | PA | US | 1 | Western States 100m 2021 (Finisher) |
| 109841 | Achard | Jean-Pierre | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 110289 | Achtenhagen | Kurt | M | CO | US | 1 | Bear, The 100m 2020 (Finisher) |
| 107243 | Acons | Georgina | F | England | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 107551 | Adam | Eric | M | Vienna | AT | 1 | Ultra Trail Vipava Valley 160k 2021 (Finisher) |
| 109221 | adame | michael | M | California | US | 1 | Bryce 100m 2021 (Finisher) |
| 105259 | Adams | Amy | F | MD | US | 4 | Yeti 100m 2020 (Finisher) |
| 108387 | Adams | Blaine | M | TX | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 103721 | Adams | Chas | M | OH | US | 4 | No Business 100m 2021 (Finisher) |
| 106056 | Adams | Chris | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 110102 | Adams | David | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 104443 | Adams | Drew | M | ID | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 105691 | Adams | Harley | M | GA | US | 2 | Never Summer 103k 2021 (23 hours) |
| 105692 | Adams | Holly | F | GA | US | 4 | Pinhoti 100m 2021 (Finisher) |
| 107767 | Adams | Jared | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 100729 | Adams | Jeffrey | M | NY | US | 16 | Worlds End 100k 2020 (19 hours) |
| 108763 | Addams | Lee | M | NE | US | 1 | Bear, The 100m 2020 (Finisher) |
| 103843 | Addison | Julia | F | CA | US | 4 | Zion 100m 2021 (Finisher) |
| 101221 | Adel | Elisabeth | F | GA | US | 2 | Long Haul 100m 2020 (Finisher) |
| 107411 | Adler | Brent | M | Oregon | US | 1 | HURT 100m 2020 (Finisher) |
| 103123 | Affleck | Nick | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 105306 | Afschar | Tom | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108087 | Afzal | Adnan | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108645 | Aggarwal | Praful | M | WI | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 108220 | Agudelo | Juan | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109397 | Aguielra Carrasco | Rafael Fernando | M | huelva | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101148 | Aguilar | Paulo | M | CA | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 110841 | Ahlberg | Johan | M | Uppland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 101787 | Aho | Janne | M | SWE | SE | 8 | Kullamannen 100m 2021 (Finisher) |
| 108860 | Ainge | Timothy | M | British Columbia | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107220 | Ainley | Simon | M | Surrey | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 109922 | Akioyamen | Faith | F | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107509 | Albanese | Richard | M | IL | US | 1 | Burning River 100m 2020 (Finisher) |
| 102963 | Albert | Dan | M | TN | US | 4 | Pinhoti 100m 2021 (Finisher) |
| 107760 | Albert | Jacob | M | IL | US | 1 | Burning River 100m 2021 (Finisher) |
| 105222 | Albert | Jeff | M | CO | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 102264 | Albert | Joe | M | OR | US | 1 | Western States 100m 2021 (Finisher) |
| 110073 | Albert | Marla | U | Tennessee | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 107639 | Albertus | Cleo | F | Western Cape | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 102476 | Albrecht | Anna | F | HI | US | 2 | HURT 100m 2020 (Finisher) |
| 108737 | Aldaz | Kylie | F | AZ | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 104920 | Aldous | Jay | M | CHE | CH | 2 | Swiss Alps 100M 100m 2021 (Finisher) |
| 107272 | Aldridge | Adam | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 106536 | Alevisos | Georg | M | GRC | GR | 4 | Mozart 100 108k 2021 (22 hours) |
| 100438 | Alexander | Jesse | M | AZ | US | 16 | Bighorn 100m 2021 (Finisher) |
| 107918 | ALEXANDER | SUSAN | F | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108372 | Alexandre | Marc-Andre | M | Quebec | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 108772 | Alfano | Eric | M | Washington | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 102585 | Allen | Brandon | M | AR | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 107522 | Allen | Chad | M | Wa | US | 1 | Bear, The 100m 2021 (Finisher) |
| 109242 | Allen | David | M | North Yorkshire | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 100220 | Allen | Gareth | M | GBR | GB | 4 | Thames Path 100 100m 2021 (Finisher) |
| 102539 | Allen | Jeff | M | CA | US | 16 | Never Summer 103k 2021 (23 hours) |
| 110500 | Allen | Nick | M | California | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 102072 | Allen | Timothy | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109034 | Allison | Keith | M | BC | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 109204 | Allnutt | Daniel | M | Ohio | US | 1 | Mohican 100m 2020 (Finisher) |
| 109634 | Allnutt | William | M | OH | US | 1 | Mohican 100m 2021 (Finisher) |
| 100396 | Alsip | Jonathan | M | MI | US | 2 | Mohican 100m 2020 (Finisher) |
| 105012 | Alsop | Jeremy | M | NC | US | 2 | Hellgate 100k 2020 (17 hours) |
| 103140 | Altemos | Erin | M | MD | US | 2 | Laurel Highlands 70.5m 2020 (20 hours) |
| 100497 | Altendahl | Joseph | M | MN | US | 16 | Superior 100 100m 2021 (Finisher) |
| 107663 | Alton | Connor | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 110411 | AlTuwaijri | Nezar | M | Riyadh Region | SA | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107149 | Alverson | Brandon | M | Florida | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 101186 | Amato | Josh | M | MO | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 107221 | ambs | brian | M | ohio | US | 1 | No Business 100m 2021 (Finisher) |
| 110193 | Ames | Bruce | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110292 | Amezcua | Natalia | F | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110860 | Amir | Omar | M | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 101653 | Amital | Chuck | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 101969 | Amlung | Jonathon | M | KY | US | 128 | Tunnel Hill 100m 2020 (Finisher) |
| 103619 | Amneskog | Tomas | M | SWE | SE | 32 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 108899 | Amor | Steven | M | Qld | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 109504 | Amoros | Esther | F | Mallorca | ES | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105561 | Andersen | Fred | M | NOR | NO | 2 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 108706 | Anderson | Alan | M | Essex | GB | 1 | Autumn 100m 2020 (Finisher) |
| 100042 | Anderson | Colin J | M | GBR | GB | 2 | Autumn 100m 2020 (Finisher) |
| 108003 | Anderson | Cordel | M | Montana | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 109190 | Anderson | Dana | M | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 105738 | Anderson | Eric | M | NC | US | 4 | Hellgate 100k 2020 (17 hours) |
| 103430 | Anderson | Jake | M | ID | US | 2 | IMTUF 100m 2021 (Finisher) |
| 108941 | Anderson | James | M | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 101185 | Anderson | Jeremy | M | WI | US | 2 | Hennepin 100m 2021 (Finisher) |
| 107445 | Anderson | Matt | M | Hampshire | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 106680 | Anderson | Matt | M | 8 | Bighorn 100m 2021 (Finisher) | ||
| 110638 | Anderson | Michael | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109724 | Anderson | Mike | M | KY | US | 1 | Burning River 100m 2021 (Finisher) |
| 103711 | Anderson | Nathan | M | PA | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 103901 | Anderson | Ryne | M | TN | US | 8 | Pinhoti 100m 2020 (Finisher) |
| 107649 | Anderson | Spencer | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 108000 | Anderson | Will | M | Texas | US | 1 | Never Summer 103k 2021 (23 hours) |
| 105115 | Andersson | Oscar | M | SWE | SE | 4 | Transgrancanaria 125k 2021 (28 hours) |
| 107811 | ANDRADA | AUGUSTUS | M | CA | US | 1 | Zion 100m 2021 (Finisher) |
| 105502 | Andrews | Bobby | M | WA | US | 8 | Moab 240 238m 2021 (102 hours) |
| 108715 | Andrews | Chris | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 108967 | Andrews | Josh | M | FLORIDA | US | 1 | Long Haul 100m 2021 (Finisher) |
| 110822 | Andrews | Zach | M | AL | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 109940 | Andric | Mirko | M | Massachusetts | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102881 | Angara | Ric | M | IL | US | 16 | Indiana 100m 2021 (Finisher) |
| 109857 | Angell | Rich | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 108189 | Angibaud | Laurent | M | FL | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 110568 | Ansley | Will | M | Alabama | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 110713 | Apolinar | Mario | M | Ca | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 109263 | Aponte | Jean | M | LA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103481 | Applegate | Rob | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108179 | Aquilano | Shea | F | IN | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 102857 | Arauzo | Megan | F | CA | US | 8 | Castle Peak 100k 2021 (21 hours) |
| 100956 | Arbinger | Kimberly | F | WI | US | 2 | Laurel Highlands 70.5m 2020 (20 hours) |
| 101848 | Arce | Patrick | M | NLD | NL | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110831 | Arce-Salgado | Edwin | M | NV | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108285 | Arcidiacono | Michael | M | NC | US | 1 | Worlds End 100k 2020 (19 hours) |
| 107180 | Ard | Mike | M | MT | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107790 | Arends | Garrick | M | Idaho | US | 1 | Never Summer 103k 2020 (23 hours) |
| 109096 | Argat | Osman Necdet | M | osmangazi | TR | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 103449 | Arguello | Adam | M | NM | US | 16 | Bighorn 100m 2021 (Finisher) |
| 100337 | Arias Massa | Marcelo | M | CHL | CL | 8 | Vulcano Ultra-Trail 100k 2019 (24 hours) |
| 108491 | Arias Resco | Jorge | M | Madrid | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100877 | Arledge | John | M | CA | US | 64 | Black Canyon 100k 2020 (17 hours) |
| 110378 | Armbrust | John | M | TX | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 107157 | Armour | Bradley | M | MA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108205 | Armstrong | Caleb | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 108192 | Armstrong | Denver | M | Ca | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 101433 | Armstrong | Jordan | F | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 110824 | Arndt | Tiemo | M | Saxony | DE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100994 | Arnold | Arthur | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 104784 | Arnold | Daniel | M | AR | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 108872 | Arnold | Jim | M | IL | US | 1 | Burning River 100m 2020 (Finisher) |
| 110343 | Arnold | Russell | M | NY | US | 1 | Thames Path 100 100m 2020 (Finisher) |
| 102591 | Arnold | Todd | M | PA | US | 4 | Zion 100m 2021 (Finisher) |
| 102559 | Arrington | Donna | F | AL | US | 16 | Mountain Lakes 100m 2021 (Finisher) |
| 110453 | Arthur | Britt | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 107841 | Ashburn | Rick | M | California | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105767 | Ashizawa | Yuji | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 101889 | Ashton | Dave | M | CA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 109866 | Askew | Darla | F | OR | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 101090 | Asmus | Michael | M | MN | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109261 | Asmuth | Peter | M | CA | US | 1 | Waldo 100k 2021 (17 hours) |
| 103523 | Aspromonte | Dan | M | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 107923 | Astle | Leslie | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107916 | Astle | Ron | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109468 | Atanasov | Konstantin | M | Sofia | BG | 1 | Istria 168k 2021 (Finisher) |
| 108637 | Aten | Stephanie | F | Ga | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 100698 | Atkins | Benjamin | M | CA | US | 16 | HOKA Bandera 100k 2021 (17 hours) |
| 100523 | Atkins | Michael | M | CO | US | 8 | Pinhoti 100m 2020 (Finisher) |
| 108621 | Atkinson | Adam | M | County Armagh | GB | 1 | Cuyamaca 100k 2021 (17 hours) |
| 108111 | ATKINSON | BRADLEY | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110067 | Atkinson | Chris | M | Waikato | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 101711 | Atkinson | Jeremiah | M | PA | US | 2 | Zion 100m 2021 (Finisher) |
| 110878 | Atkinson | Justin | M | Alberta | US | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 107796 | Atkinson | Karin | F | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108836 | Atkinson | Patrick | M | Delaware | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107512 | Ator | Adam | M | AZ | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105443 | Atsumi | Yuka | F | JPN | JP | 2 | HURT 100m 2020 (Finisher) |
| 108447 | Atzeni | Giacomo | M | Italy | IT | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 110435 | Auboiroux | Vincent | M | FR | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110271 | Aucella | Adam | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 109006 | Audette | Guillaume | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108821 | Auger | Abbi | F | Kentucky | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 107672 | Aure | Loïc | M | Provence | FR | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 105569 | Auth | Kimberly | F | PA | US | 2 | Rim to River 100m 2021 (Finisher) |
| 107831 | Autrey | Gill | M | GA | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 107378 | Avance | Brandon | U | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 110859 | Averill | Andy | M | Wisconsin | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 105606 | Avila | Moises | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 107776 | Avontuur | Antonius | M | Noord Holland | NL | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 109164 | Axelrod | Matthew | M | Mn | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108130 | Ayala | Josue | M | Morelos | MX | 1 | Eastern States 100m 2021 (Finisher) |
| 105036 | Ayala | Rodrigo | M | CA | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 109220 | AZMI | NAAMAN | M | ISRAEL | IL | 1 | Istria 168k 2021 (Finisher) |
| 104397 | Bégin | Steve | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 102660 | B√∂kman | Jakob | M | SWE | SE | 16 | Tor des Géants 330k 2021 (132 hours) |
| 107629 | Bååth | Daniel | M | Malmo | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 107839 | Babb | Michael | M | co | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109211 | Baca | Allison | F | CO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 104750 | Baca | Christopher | M | NM | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110537 | Bach | Nick | M | Fl | US | 1 | Long Haul 100m 2020 (Finisher) |
| 107550 | Bachmann | Gemma | F | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110547 | Bachmann | Joshua | M | Zurich | CH | 1 | Swiss Alps 100k 100k 2021 (22 hours) |
| 104331 | Back | Woolery | M | GA | US | 2 | Yeti 100m 2020 (Finisher) |
| 108535 | Bacon | Jonathan | M | Zurich | CH | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109084 | Bacwaden | Byrne | M | Mountain Province | PH | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 102851 | Baer | Katherine | F | NC | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 105279 | Baetz | James | M | WI | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 110587 | Baeza | Felicia | F | California | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 108101 | Bagrin | Adrian | M | California | US | 1 | Zion 100k 2020 (19 hours) |
| 101514 | Baguenier Desormeaux | Arnaud | M | FRA | FR | 2 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 100255 | Bahamundi | Jason | M | TX | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 102731 | Bailey | Chad | M | TX | US | 4 | Bighorn 100m 2021 (Finisher) |
| 109955 | Bailey | Chris | M | MD | US | 1 | Rim to River 100m 2021 (Finisher) |
| 101083 | Bailey | Jack | M | MA | US | 1 | Western States 100m 2021 (Finisher) |
| 109669 | Bailey | Jason | M | Tn | US | 1 | Bryce 100m 2021 (Finisher) |
| 109962 | Bailey | Matthew | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108004 | Bain | Andrew | M | Ny | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 100696 | Bain | Andy | M | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 102319 | Bain | Mark | M | OH | US | 1 | Western States 100m 2021 (Finisher) |
| 103311 | Bainbridge | Andrew | M | CO | US | 32 | Bighorn 100m 2021 (Finisher) |
| 109960 | Bainbridge | Emma | F | Lancashire | GB | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 104224 | Baine | Trevor | M | AB | CA | 16 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108514 | Baine | Trevor | M | DC | US | 1 | Hardrock 100m 2021 (Finisher) |
| 110005 | Baines | Paul | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 106637 | Baird | Nakia | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 107703 | Bajtek | Rostislav | M | Moravskoslezský | CZ | 1 | Krakonosova Stovka 100k 2021 (22 hours) |
| 100995 | Baker | Adam | M | MD | US | 4 | Yeti 100m 2021 (Finisher) |
| 110840 | Baker | Chris | M | Berkshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 108885 | baker | christy | F | CA | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 104086 | Baker | Corey | M | MI | US | 4 | Indiana 100m 2021 (Finisher) |
| 102638 | Baker | Jessica | F | NC | US | 8 | Zion 100m 2021 (Finisher) |
| 103099 | Baker | Josh | M | Louisiana | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 102135 | Baker | Loren | M | CA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 110731 | Baker | Michelle | F | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 102133 | Baker | Steve | M | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 104191 | Bakker | Laura | F | GBR | GB | 2 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 104380 | Balabuck | Jon | M | ON | CA | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 103831 | Balboa | Sergio | M | SC | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 104314 | Baldwin | Christopher | M | AR | US | 2 | Umstead 100m 2021 (Finisher) |
| 110152 | Baldwin | Doug | M | MO | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108105 | Baldwin | Jayme | F | Ca | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 101451 | Baldwin | Scott | M | PA | US | 8 | Hennepin 100m 2021 (Finisher) |
| 108823 | Balestrieri | Daniel | M | MA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107160 | Ball | Alex | M | SC | US | 1 | No Business 100m 2021 (Finisher) |
| 110624 | Ball | Mitchell | M | New York | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 106689 | Ball | Wayne | M | MA | US | 16 | Twisted Branch 100k 2021 (19 hours) |
| 108191 | Ballard | Jennifer | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 101763 | Ballezza | Joel | M | WA | US | 8 | Bear, The 100m 2020 (Finisher) |
| 109686 | Balogh | Laszlo | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 105611 | Baltieri | Fabio | M | ITA | IT | 2 | Kerry Way Ultra 193k 2020 (40 hours) |
| 108517 | Bamford | Nicholas | M | QLD | AU | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 102027 | Banaszak | Nicholas | M | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 106369 | Bancroft | Brett | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103219 | Banel | Paul | M | CO | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 108746 | Banerjee | Arnab | U | WA | US | 1 | Bryce 100m 2021 (Finisher) |
| 102846 | Banh | Hoa | F | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109051 | Banister | Haylei | F | GA | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 107159 | Banks | Kenneth | M | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 107181 | Banks | Trevor | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 104052 | Bannwarth | Claire | F | FRA | FR | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102134 | Banoun | Ninette | F | NOR | NO | 8 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 107401 | Barbee | Tim | M | Columbia | US | 1 | Tunnel Hill 100m 2020 (Finisher) |
| 109688 | Barber | Chris | M | NV | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 101775 | Barber | Diego | M | ESP | ES | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 106133 | Barber | Kelly | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 107222 | Barden | Jesse | M | AZ | US | 1 | Zion 100k 2021 (19 hours) |
| 109732 | Bardy | Arnaud | M | France | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 104642 | Baret | Sylvain | M | FRA | FR | 2 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 107772 | Barford | Liam | M | Northamptonshire | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 104449 | Barger | Luke | M | CO | US | 4 | Siskiyou Outback 100k 2021 (17 hours) |
| 103932 | Barichievich | Alan | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 103549 | Barichievich | Caroline | F | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 100764 | Baris | Laney | F | NJ | US | 8 | Laurel Highlands 70.5m 2021 (20 hours) |
| 101411 | Barkan | William | M | CA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 101480 | Barkdull | David | M | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 108722 | Barker | Jason | M | Ar | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107184 | Barker | Jonathan | M | CO | US | 1 | Hardrock 100m 2021 (Finisher) |
| 102017 | Barker | Mae | F | FL | US | 16 | Pinhoti 100m 2021 (Finisher) |
| 109070 | Barlow | Tommy | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100943 | Barnaba | Neal | M | PA | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 102567 | Barnard | Joe | M | KS | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 108867 | Barnard | Riaan | M | Gauteng | ZA | 1 | SkyRun 100k 2020 (28 hours) |
| 103167 | Barnes | Desiree | F | OR | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 101667 | Barnes | Paul | M | CA | US | 2 | Never Summer 103k 2020 (23 hours) |
| 105897 | Barnes | Russell | M | MS | US | 2 | Arkansas Traveler 100m 2021 (Finisher) |
| 109179 | Barnes | Shaun | M | WI | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 102009 | Barnett | Clayton | M | CA | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 109734 | Barney | Andrew | M | UT | US | 1 | Hardrock 100m 2021 (Finisher) |
| 102352 | Barney | Katie | F | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 100145 | Barr | Andrew | M | CO | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 101884 | Barr | Tim | M | CO | US | 16 | Run Rabbit Run 100m 2021 (Finisher) |
| 110314 | BARRAU | Nicolas | M | OISE | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104282 | Barrett | Andrew | M | FL | US | 4 | Long Haul 100m 2021 (Finisher) |
| 109551 | Barrett | Damian | M | Essex | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 100201 | Barrett | Dan | M | GBR | GB | 4 | South Downs Way 100m 2021 (Finisher) |
| 100495 | Barrett | Sarah | F | CT | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 100424 | Barrett | Wade | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102543 | Barrientos | Vincent | M | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 106692 | Barrios | Luis | M | 4 | Long Haul 100m 2020 (Finisher) | ||
| 107439 | Barron | Viviana | F | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109188 | Barros | Pedro | M | GONDOMAR | PT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 107967 | Barry | David | M | N/A | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 100619 | Barry | Guillaume | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 107782 | Barry | Trish | F | Idaho | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100428 | Bartelsmeyer | Andrew | M | MO | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 100067 | Bartholomew | Ash | M | AUS | AU | 32 | Borneo Ultra-Trail Marathon 106k 2020 (32 hours) |
| 104127 | Barton | David | M | DEU | DE | 8 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 108880 | Barton | Doug | M | Ontario | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 102200 | Barton | Maria | F | MN | US | 16 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108293 | BASILICO | LEO | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 107613 | Bass | Ilya | M | MA | US | 1 | Bryce 100m 2021 (Finisher) |
| 108673 | Bass | Travis | M | Utah | US | 1 | Zion 100k 2021 (19 hours) |
| 101680 | Bassa | Tommaso | M | ITA | IT | 8 | Mozart 100 108k 2021 (22 hours) |
| 100928 | Bassett | Alison | F | CA | US | 16 | Rio Del Lago 100m 2021 (Finisher) |
| 109570 | Bassett | Nicholas | M | WY | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 108536 | Bassson | Grobler | M | Western Cape | ZA | 1 | SkyRun 100k 2019 (28 hours) |
| 110010 | Basu | Ekta | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 101385 | Batchelor | Eric | M | CA | US | 8 | Beaverhead 100k 2021 (19 hours) |
| 110834 | Bate | Alex | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107630 | Bateman | Luke | M | Texas | US | 1 | Western States 100m 2021 (Finisher) |
| 109327 | Bates | Becky | F | B.C. | CA | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110900 | Bates | Benjamin | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110654 | Bates | Daniel | M | CT | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108173 | Bates | Dean | M | TX | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 109007 | Bates | Jason | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 110408 | Bates | Wayne | M | NY | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 109174 | Batistella | Cristian Gabriel | M | Cordoba | AR | 1 | Patagonia 112k 2021 (27 hours) |
| 101557 | Battson | Elaine | F | GBR | GB | 32 | Thames Path 100 100m 2021 (Finisher) |
| 109510 | Baud-Lavigne | Bertrand | M | QC | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 102657 | Bauer | Becki Lynn | F | CO | US | 32 | Never Summer 103k 2020 (23 hours) |
| 102680 | Bauer | Beth | F | OH | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 109539 | Bauer | Brett | M | Washington | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 110494 | Bauer | Robert | M | New York | US | 1 | Yeti 100m 2021 (Finisher) |
| 102376 | Baum | Andrew | M | UT | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 102068 | Baum | James | M | NC | US | 8 | Burning River 100m 2020 (Finisher) |
| 109603 | Baum | Jason | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 104079 | Baumann | Jonathon | M | IN | US | 8 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 106694 | Baumgartner | Markus | M | Ohio | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 109392 | Baumgartner | Stephen | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109787 | Baver | Scott | M | Ma | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110895 | Baynes | Brian | M | MA | US | 1 | Moab 240 238m 2021 (102 hours) |
| 108640 | Bazzell | Garrett | M | IA | US | 1 | Never Summer 103k 2020 (23 hours) |
| 109530 | Beachy | Kevin | M | OH | US | 1 | Mohican 100m 2021 (Finisher) |
| 100844 | Beard | Marcy | F | TX | US | 64 | Zion 100k 2020 (19 hours) |
| 102663 | Beard | Ryan | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 104524 | Bearss | Joseph | M | CO | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 104598 | Beatty | Croom | M | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109171 | Beauchamp | Martin | M | QC | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 109200 | Beaulieu | Patrick | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106227 | Beaupre | Adam | M | MT | US | 2 | Bigfoot 206m 2021 (85 hours) |
| 107309 | Beaven | Ally | M | Highland | GB | 1 | Tor des Géants 330k 2021 (132 hours) |
| 109334 | Becherer-Bailey | Graham | M | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 109121 | Beck | Christine | F | il de france | DE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108165 | Beck | Tod | M | WI | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 102662 | Becker | David | M | PA | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 106697 | Becker | John | M | 8 | Rio Del Lago 100m 2021 (Finisher) | ||
| 102583 | Becker | Lea | F | PA | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 109142 | Becker | Shawn | M | VA | US | 1 | Hellgate 100k 2020 (17 hours) |
| 109493 | Beckett | Phil | M | London | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 109336 | Beckman | Alexander | M | UT | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 102503 | Becotte | Pascal | M | ON | CA | 16 | Indiana 100m 2021 (Finisher) |
| 103164 | Bedolla | Samuel | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 107170 | Beebe | Anthony | M | California | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 107437 | Beeninga | Matt | M | WA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 103263 | Beggs | Mark | M | AL | US | 8 | Pinhoti 100m 2021 (Finisher) |
| 100486 | Begic | Kristijan | M | CT | US | 2 | Worlds End 100k 2021 (19 hours) |
| 108038 | Bejil | Abraham | M | Texas | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107662 | Bekker | Ryan | M | Western cape | ZA | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 104864 | Bell | Nathan | M | ID | US | 8 | Wasatch Front 100m 2021 (Finisher) |
| 109205 | BELL | Rob | M | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 109387 | BELLETRE | Nicolas | M | Nord | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102303 | Belling | Sean | M | OR | US | 32 | Waldo 100k 2021 (17 hours) |
| 108131 | Belmonte | Edder | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110774 | Belus | Andrew | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107775 | Benbow | Joe | M | New Zealand | NZ | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 105619 | Bender | Chris | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 108238 | Bendt | Mike | M | SD | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 106591 | Benefield | Brandon | M | WA | US | 16 | Cascade Crest 100m 2021 (Finisher) |
| 110149 | Bengtsson | Kristofer | M | Småland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 101762 | Benkers | Adam | M | IL | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104785 | Bennett | Drew | M | MI | US | 1 | Western States 100m 2021 (Finisher) |
| 107303 | Bennett | Evan | M | Ohio | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 101088 | Bennett | Heidi | F | UT | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 102271 | Bennett | James | M | GBR | GB | 8 | South Downs Way 100m 2021 (Finisher) |
| 107416 | Bennett | Justin | M | NJ | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 110703 | Bennett | Mark | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102553 | Bennett | Simon | M | GBR | GB | 64 | Thames Path 100 100m 2020 (Finisher) |
| 103643 | Benoit | Trish | F | ON | CA | 4 | Tarawera 100M 100m 2020 (30 hours) |
| 101326 | Benshoff | Michelle | F | PA | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 100214 | Bensted | Melissa | F | AUS | AU | 8 | Blackall 100K 100k 2020 (18 hours) |
| 109611 | benvenuti | vittorio | M | TRENTINO | IT | 1 | Ultra Trail Vipava Valley 160k 2021 (Finisher) |
| 109867 | Benvie | Ben | M | Ontario | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 103881 | Berard | Shaun | M | CT | US | 2 | Hellgate 100k 2019 (17 hours) |
| 110380 | Berdine | Matthew | M | CO | US | 1 | Bighorn 100m 2021 (Finisher) |
| 105618 | Beretta | Roberto | M | ITA | IT | 4 | Abbots Way 125k 2021 (28 hours) |
| 104726 | Berg | Olov | M | SWE | SE | 8 | Taby Extreme Challenge 100 100m 2020 (Finisher) |
| 107199 | Bergemann | Kyle | M | NC | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108720 | Bergenske | Lanore | F | California | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 100009 | Berger | Aaron | M | AZ | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 101790 | Berger | Dan | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 109936 | Berger | Natalie | F | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 104217 | Bergeron | Greg | M | CA | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 100068 | Bergeson | Soren | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 110449 | Berghuijs | Wouter | M | North Holland | NL | 1 | Mozart 100 108k 2021 (22 hours) |
| 110661 | Bergstrom | Bret | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 108094 | Berjikian | Jennifer | F | Utah | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 104218 | Bermudez | Conrado | M | NJ | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 109778 | Bernard | Nicolas | M | isère | FR | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 108758 | Bernard | Yannick | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109656 | Bernardino | Fernando | M | London | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 102414 | Berney | Joe | M | IRL | IE | 2 | Kerry Way Ultra 193k 2021 (40 hours) |
| 104577 | Bernhisel | Drew | M | TX | US | 1 | Western States 100m 2021 (Finisher) |
| 103285 | Bernier | Craig | M | NJ | US | 4 | Long Haul 100m 2021 (Finisher) |
| 101188 | Bernier | Isabelle | F | QC | CA | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 104751 | Bernosky | Stefanie | F | WA | US | 64 | Canal Corridor 100 100m 2021 (Finisher) |
| 109330 | Bernot | Kimberly | F | BC | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 103080 | Berquam | Paul | M | UT | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 100692 | Berti | Evan | M | NJ | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 102170 | Bertolone | Todd | M | CA | US | 32 | Beaverhead 100k 2021 (19 hours) |
| 103069 | Bertot | Jeff | M | UT | US | 2 | Bighorn 100m 2021 (Finisher) |
| 105920 | Bertram | John | M | OH | US | 4 | Bear, The 100m 2020 (Finisher) |
| 109168 | Best | Makenzie | U | OH | US | 1 | Yeti 100m 2021 (Finisher) |
| 109463 | Betouret | Sebastien | M | Greater London | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 108223 | Betrus | Christopher | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108343 | Betten | Sebastian | M | QLD | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102592 | Beuke | Donald | M | CO | US | 16 | Bighorn 100m 2021 (Finisher) |
| 108049 | Beveroth | Christopher | M | IL | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105100 | Bevilacqua | Michael | M | MD | US | 2 | Worlds End 100k 2020 (19 hours) |
| 100717 | Bevins | Micah | M | OK | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 102159 | Bhansali | Vineer | M | CA | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 106039 | Bhark | Bryan | M | WA | US | 4 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 106706 | Bhasin | Saurabh | M | 8 | Rio Del Lago 100m 2021 (Finisher) | ||
| 110130 | Bhosle | Amit | U | WA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109379 | Bianco | Peter | M | KS | US | 1 | Never Summer 103k 2021 (23 hours) |
| 102439 | Biber-Brewer | Rachel | F | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 103729 | Bickers | Natalie | F | AK | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101708 | Bickerstaff | Henry | M | OK | US | 2 | Yeti 100m 2020 (Finisher) |
| 107428 | Biedenbender | Gerald | M | KY | US | 1 | Burning River 100m 2021 (Finisher) |
| 100966 | Bielemeier | Mike | M | OR | US | 16 | Bighorn 100m 2021 (Finisher) |
| 103148 | Bilou | Travis | M | AB | CA | 64 | Canadian Death Race 125k 2021 (24 hours) |
| 110325 | Bincham | Stuart | M | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 110603 | Bingham | Eugene | M | Auckland | NZ | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 109012 | Birch | Evan | U | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 100806 | Bird | Nora | F | WI | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107483 | Birdsong | Cassady | F | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109294 | BISHOP | JAMES | M | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 104534 | Bitters | Matthew | M | CO | US | 4 | Bighorn 100m 2021 (Finisher) |
| 108485 | Bjerke | Harald | M | Viken | NO | 1 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 110868 | Bjorkqvist | Jonas | M | S | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 107937 | Bjornlie | Shane | M | CA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 103770 | Black | Austin | M | NH | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 105219 | Black | Jeff | M | ID | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 102394 | Blackburn | Jay | M | WA | US | 32 | Siskiyou Outback 100k 2021 (17 hours) |
| 102146 | Blackburn | Steven | M | NZL | NZ | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 106104 | Blackwell | James | M | CA | US | 8 | Cuyamaca 100k 2021 (17 hours) |
| 100591 | Blaha | Martin | M | CZE | CZ | 2 | Transgrancanaria 125k 2021 (28 hours) |
| 107651 | Blake | Chandler | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 103108 | Blake | Julia | F | ON | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 110507 | Blake | Kiley | M | ID | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 103227 | Blakemore | Conan | M | CO | US | 8 | Bighorn 100m 2021 (Finisher) |
| 109612 | Blanchard | Felix-Antoine | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107707 | Blanchard | Justin | M | WA | US | 1 | Burning River 100m 2021 (Finisher) |
| 108309 | Bland | James | M | Manawatu | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 104583 | Blank | Jared | M | OR | US | 4 | Siskiyou Outback 100k 2021 (17 hours) |
| 100420 | Blankenship | Buck | M | AZ | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 106707 | Blankenship | Jon | M | 32 | Black Canyon 100k 2020 (17 hours) | ||
| 110223 | Blankenship | Rick | M | Virginia | US | 1 | Umstead 100m 2021 (Finisher) |
| 106079 | Blanton | Tommy | M | NE | US | 2 | Never Summer 103k 2021 (23 hours) |
| 109540 | blasch | kyle | M | idaho | US | 1 | Zion 100m 2021 (Finisher) |
| 103982 | Blatecky | Andy | M | CO | US | 4 | Hardrock 100m 2021 (Finisher) |
| 101637 | Bledsoe | Jim | M | NV | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 109231 | Blessing | Ben | M | ID | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109931 | Blewett | Earl | M | OK | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 100012 | Bligan | Carl | M | PA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 106708 | Blinn | Brenda | F | 64 | Canyons, The 100k 2021 (19 hours) | ||
| 110883 | Bliss | Joe | M | Michigan | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 102757 | Bliss | Nathan | M | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 103929 | Block | Travis | M | MN | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 101264 | Blomgren | Wade | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 109152 | Blondeau | Amanda | F | Virginia | US | 1 | Grindstone 100m 2021 (Finisher) |
| 106240 | Blonski | Daniel | M | SVK | SK | 2 | Ponitrianska 105k 2021 (24 hours) |
| 107795 | Bloom | Ilene | F | CO | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107863 | Blue | Ray | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 110825 | Bluma | Anna | F | WI | US | 1 | Hennepin 100m 2021 (Finisher) |
| 102608 | Blumentritt | Jamie | F | MN | US | 2 | Indiana 100m 2021 (Finisher) |
| 110809 | Blyth | Jason | M | MT | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 103914 | Bobovski | Kate | F | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 108392 | Bock | John | M | WA | US | 1 | Zion 100k 2021 (19 hours) |
| 108587 | Bodi | Pavel | M | Kilkenny | SK | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 109609 | Bodle | Bradley | M | WA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 107519 | Bodle | Kevin | M | WA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 100013 | Boehm | Branton | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 108138 | Boese | Todd | M | VA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 110752 | Bogdaschewskyi | Todd | M | Ohio | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 108660 | Boger | Brandon | M | NC | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 100896 | Bohemier | Marc-Andre | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 100981 | Boic | Dennis | M | CA | US | 32 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110324 | Boisnard | Maxime | M | Vaud | CH | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 100118 | Boland | Tom | M | GBR | GB | 16 | Tuscany Crossing 103k 2021 (21 hours) |
| 109973 | Bolden | Michael | M | TX | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109949 | Boley | Brianna | F | WA | US | 1 | Moab 240 238m 2021 (102 hours) |
| 107692 | Bolin | Jeffery | M | TN | US | 1 | Yeti 100m 2021 (Finisher) |
| 110670 | Bollinger | Reggie | M | NE | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110651 | Bolt | Michael | M | CO | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 106558 | Bondarev | Andrew | M | PA | US | 2 | Worlds End 100k 2021 (19 hours) |
| 100741 | Bondurant | Robert | M | WA | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 110852 | Bongartz | Meghan | F | VT | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 106312 | Bonnett | Paul | M | AZ | US | 1 | Western States 100m 2021 (Finisher) |
| 102908 | Bonnett-Natraj | Karen | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109717 | Bonneviale | Brice | M | France | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 100657 | Booher | Lisa | F | AL | US | 16 | Javelina Jundred 100m 2020 (Finisher) |
| 107321 | Bookspan | Adam | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 106709 | Boone | Amelia | F | 2 | Run Rabbit Run 100m 2021 (Finisher) | ||
| 101321 | Booth | Debbie | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 105638 | Booth | John | M | CA | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 109876 | Boothby | Thomas | M | WY | US | 1 | Bryce 100m 2020 (Finisher) |
| 105924 | Boothroyd | Dave | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 108129 | Borden | Timothy | M | California | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109655 | Bordenave | Garrett | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108096 | Boruta | Mirek | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104407 | Boscarioli | Clodis | M | BRA | BR | 2 | Brazil 135 135m 2021 (Finisher) |
| 109035 | Bosch | Ben | M | CO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108576 | Bost | Bryan | M | FL | US | 1 | Yeti 100m 2021 (Finisher) |
| 109679 | Boswell | Mason | M | Minnesota | US | 1 | Bear, The 100m 2021 (Finisher) |
| 106172 | Bosworth | Sam | M | CA | US | 2 | Waldo 100k 2021 (17 hours) |
| 105464 | Bottos | Michael | M | VA | US | 2 | Umstead 100m 2021 (Finisher) |
| 110150 | Bouchard | Julien | M | Quebec | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 108053 | Boucheix | Alexandre | M | Val de Marne | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 107779 | Bouchey | Joseph | M | NV | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109907 | Bouliou | Patrick | M | Paris | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103690 | Bourassa | Denise | F | CO | US | 16 | HURT 100m 2020 (Finisher) |
| 102023 | Bourgeois-Hope | Patrick | M | QC | CA | 4 | Quebec Mega Trail 110k 2021 (22 hours) |
| 105474 | Bourgnon | Julien | M | CHE | CH | 2 | Tuscany Crossing 103k 2021 (21 hours) |
| 107575 | Bourne | Debra | F | Kent | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 109443 | Bourret | Michelle | F | United States of America | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107419 | Bousquet | Michelle | F | Quebec | CA | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101905 | Boutte | Jeff | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 108648 | Bovaird | Ray | M | Ohio | US | 1 | Mohican 100m 2021 (Finisher) |
| 105011 | Bowden | Upton | M | MI | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109990 | Bowen | Caleb | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 101449 | Bowen | Megan | F | MT | US | 2 | IMTUF 100m 2020 (Finisher) |
| 103651 | Bowman | Scott | M | TN | US | 1 | Western States 100m 2021 (Finisher) |
| 108593 | Bowman | Sean | M | Indiana | US | 1 | Indiana 100m 2021 (Finisher) |
| 110385 | Bowry | Richard | M | Ontario | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 103229 | Bowyer | Gregory | M | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 108945 | Boyd | Adam | M | Arizona | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 102470 | Boyden | Robert | M | UT | US | 4 | Zion 100m 2021 (Finisher) |
| 109659 | boyer | brice | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 102210 | Boyer | Daniel | M | UT | US | 2 | Bear, The 100m 2021 (Finisher) |
| 108201 | Boyle | John | M | Dublin | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 110553 | Boynton | Naomi | F | New Zealand | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 109370 | Bozzoli | Jacopo | M | Bo | IT | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 104586 | Braaksma | Amy | F | MT | US | 2 | IMTUF 100m 2021 (Finisher) |
| 108008 | Bracker | Kevin | M | Missouri | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 107535 | Brackett | Jennifer | F | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 107729 | Bracy | Addie | F | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110745 | Bradley | Cat | F | CO | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101146 | Bradley-Jones | David | M | GBR | GB | 2 | Thames Path 100 100m 2021 (Finisher) |
| 100771 | Bradner | Aaron | M | TN | US | 8 | Hellgate 100k 2020 (17 hours) |
| 108844 | Brady | Casey | F | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 105253 | Brady | Elliot | M | BC | CA | 4 | Canadian Death Race 125k 2021 (24 hours) |
| 108764 | Brady | John | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 102930 | Brady | Lance | M | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 104243 | Brady | Riley | F | PA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108084 | Brady | Sarah | F | Ireland | IE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 107599 | Braithwaite | Stephen | M | Cumbria | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 106465 | Brake | Michael | M | GA | US | 4 | Yeti 100m 2020 (Finisher) |
| 107867 | Braman | Michael | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 110659 | Brana | Jeffrey | M | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109163 | Branam | Timothy | M | Indiana | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 102915 | Branco | Alexandre | M | BRA | BR | 16 | Brazil 135 135m 2021 (Finisher) |
| 107572 | Brand | Christopher | M | NC | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104674 | Brand | Naomi | F | ZAF | ZA | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 110771 | Brandner | Erik | M | Minnesota | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109056 | Brandt | Eric | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 108744 | Branham | Jason | M | Pennsylvania | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 110014 | Branholm | Daniel | M | Västra Götalandsregionen | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 104470 | Branick-Abilla | Margaret | F | CA | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 102248 | Braninburg | Jody | M | CA | US | 32 | Black Canyon 100k 2021 (17 hours) |
| 108689 | Branislav | Branislav | M | Västra Götaland | SE | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 102279 | Brann | Erika | F | New South Wales | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109296 | Brantley | Paul | M | Kentucky | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 100353 | Brashear | Bob | M | KY | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 110765 | Brasz | Deanna | F | ON | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 100313 | Braun | Rhonda | F | NY | US | 8 | Bryce 100m 2021 (Finisher) |
| 104556 | Braunlich | David | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 103062 | Bray | Michael | M | AUS | AU | 2 | Tarawera 100M 100m 2020 (30 hours) |
| 100084 | Brazier | Ian | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 107618 | Brazil | Miles | M | NV | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 108420 | Breen | Verity | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 110331 | Bremner | Rebekka | F | Colorado | US | 1 | Bear, The 100m 2020 (Finisher) |
| 104075 | Brenac | Nicolas | M | FRA | FR | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 106550 | Brennan | James | M | AUS | AU | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 100894 | Brennen | Peter | M | CO | US | 32 | Never Summer 103k 2020 (23 hours) |
| 110053 | Brenner | Craig | M | Tennessee | US | 1 | No Business 100m 2021 (Finisher) |
| 105136 | Brennwald | Alex | M | CHE | CH | 8 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 104223 | Brescia | Laura | F | AB | CA | 2 | Canadian Death Race 125k 2021 (24 hours) |
| 103536 | Bretan | Jonathan | M | CA | US | 32 | Castle Peak 100k 2021 (21 hours) |
| 109575 | bretl | James | M | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 110224 | Brett | Oliver | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 105347 | Bretz | Virgil | M | WA | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 110594 | Breuer | Reed | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105974 | Brey | Curt | M | WI | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 101144 | Breyfogle | James | M | AZ | US | 2 | Bryce 100m 2021 (Finisher) |
| 101774 | Breznicky | John | M | NY | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 102649 | Briant | Yoann | M | QC | CA | 2 | Quebec Mega Trail 100m 2021 (Finisher) |
| 101078 | Bricker | Jill | F | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 108367 | Briggs | LeRoy | M | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108147 | Briggs | Spencer | M | NM | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 101453 | Briggs | Will | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110857 | Brightwings-Pease | Timothy | M | MT | US | 1 | Bighorn 100m 2021 (Finisher) |
| 108477 | brignone | alberto | M | CN | IT | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107365 | Briley | Phil | M | Kent | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 101012 | Briley | Steve | M | UT | US | 4 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 106717 | Briley | Tim | M | 8 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) | ||
| 110669 | Brindle | Olivia | F | Zurich | CH | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108554 | Brizic | Melissa | F | Colorado | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 102699 | Broadhurst | Chris | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109024 | Brochu | Felix-Olivier | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 103460 | Brock | Kenna | F | CO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 104768 | Brockdorf | Carmen | F | FL | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 110801 | Broderick | Stacia | F | MA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108568 | Broman | Marcus | M | Skåne | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 102673 | Broman | Tomas | M | SWE | SE | 4 | Kullamannen 100m 2021 (Finisher) |
| 107435 | Bromley | Matt | M | MI | US | 1 | Yeti 100m 2020 (Finisher) |
| 100537 | Bronson | Christopher | M | CA | US | 16 | Sean O'Brien 100k 2020 (16 hours) |
| 102747 | Bronstein | Craig | M | CA | US | 64 | Javelina Jundred 100m 2020 (Finisher) |
| 107534 | Brookings | Pollee | F | OR | US | 1 | IMTUF 100m 2021 (Finisher) |
| 109728 | Brooks | Chloe | F | West Yorkshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 109049 | Brooks | Derek | M | CO | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 109421 | Brooks | Heather | F | Montana | US | 1 | Hardrock 100m 2021 (Finisher) |
| 107874 | Brooks | Jonathon | M | IL | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 101931 | Brooks | Kevin | M | WA | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 105901 | Brooks | Robert | M | NC | US | 4 | Umstead 100m 2021 (Finisher) |
| 103178 | Bross | Ted | M | CO | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 107154 | Brosseau | Philippe | M | Québec | CA | 1 | Quebec Mega Trail 110k 2020 (22 hours) |
| 110139 | Brossellier | Sebastien | M | Pays de la Loire | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 107227 | Brossia | Angelia | F | Ohio | US | 1 | Burning River 100m 2021 (Finisher) |
| 108037 | Brouwer | Mitch | M | MI | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 102062 | Brower | Chad | M | SD | US | 8 | Hennepin 100m 2021 (Finisher) |
| 108098 | Brower | Deryk | M | BC | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108724 | Brown | Alaina | F | NE | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109942 | Brown | Anabella | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 106719 | Brown | Cassie | F | AR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 110873 | Brown | Cinda | F | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 106288 | Brown | David | M | CO | US | 64 | Pinhoti 100m 2020 (Finisher) |
| 108018 | Brown | Deborah | F | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 109927 | Brown | Derek | M | MO | US | 1 | Grindstone 100m 2021 (Finisher) |
| 103417 | Brown | Doug | M | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110126 | Brown | Edward | M | Colorado | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 108069 | Brown | Jeff | M | Il | US | 1 | Hennepin 100m 2021 (Finisher) |
| 109950 | Brown | Jeffrey | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 108661 | Brown | Jeremy | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103434 | Brown | Joshua | M | AK | US | 4 | Zion 100m 2021 (Finisher) |
| 109639 | brown | kellie | U | NM | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 100132 | Brown | Kris | M | CA | US | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 102802 | Brown | Leah | F | OR | US | 2 | Bear, The 100m 2021 (Finisher) |
| 104648 | Brown | Meagan | F | AUS | AU | 8 | Blackall 100K 100k 2021 (18 hours) |
| 108700 | Brown | Mike | M | Arkansas | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 106720 | Brown | Miles | M | 4 | Surf Coast Century 100k 2020 (16 hours) | ||
| 109624 | Brown | Peter | M | CA | US | 1 | Waldo 100k 2021 (17 hours) |
| 109681 | Brown | Rob | M | IL | US | 1 | Indiana 100m 2021 (Finisher) |
| 109384 | Brown | Roderick | M | London | GB | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100498 | Brown | Ryan | M | MD | US | 8 | Hellgate 100k 2019 (17 hours) |
| 104902 | Brown | Ryan | M | TX | US | 2 | Arkansas Traveler 100m 2021 (Finisher) |
| 110354 | Brown | Simon | M | Kent | US | 1 | Thames Path 100 100m 2021 (Finisher) |
| 100740 | Brown | Stephen | M | AL | US | 4 | Georgia Death Race 74m 2021 (23 hours) |
| 104990 | Brown | Steven | M | IN | US | 4 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 103202 | Brown | Todd | M | IL | US | 128 | Burning River 100m 2020 (Finisher) |
| 110405 | Browne | Duncan | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 103519 | Browne | Glen | M | SGP | SG | 8 | Tarawera 100K 102k 2020 (17 hours) |
| 110026 | Browning | Kristina | F | VA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108730 | Brownlee | Johnathan | M | GA | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 108451 | Broz | Ondrej | M | Czech Republic | CZ | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 109216 | Brubaker | Daryl | M | VA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 103131 | Bruce | Chad | M | CA | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 108027 | Bruce | Sarah | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105286 | Brugman | Gretchen | F | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109952 | Brunner | Juergen | M | Austria | AT | 1 | Istria 168k 2021 (Finisher) |
| 101630 | Bruno | Benjamin | M | VT | US | 2 | Waldo 100k 2021 (17 hours) |
| 105296 | Bruno | Christopher | M | MD | US | 4 | Bryce 100m 2021 (Finisher) |
| 103975 | Bruno | John | M | SC | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 109651 | Brunton | Danny | M | Driffield | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 109352 | Brunton | David | M | Lancs | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 108972 | Bruun-Jensen | Jacob | M | Nevada | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 109272 | Bruzek | Meredith | F | MN | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108107 | Bryant | Vickie | F | VA | US | 1 | Yeti 100m 2020 (Finisher) |
| 107429 | Bubany | Shawn | M | New York | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108052 | Bucci | Daniel | M | WA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109119 | Bucciarelli | Chris | M | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 110111 | Buchan | Scott | M | Il | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 106724 | Buchanan | Jared | M | Connecticut | US | 2 | Moab 240 238m 2021 (102 hours) |
| 100600 | Buchanan | Youa | F | CA | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 100976 | Buckingham-Burr | Will | M | GBR | GB | 4 | Transgrancanaria 125k 2020 (28 hours) |
| 107799 | Buckley | Brian | M | Cork | IE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103324 | Buckley | Stacey | F | NE | US | 1 | Western States 100m 2021 (Finisher) |
| 101089 | Budesa | Matt | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 105822 | Budge | John | M | MT | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 100713 | Budziak | Nathan | M | CA | US | 4 | Waldo 100k 2021 (17 hours) |
| 102729 | Budzik | Kassandra | F | TX | US | 4 | Canal Corridor 100 100m 2021 (Finisher) |
| 109862 | Budzyn | Megan | F | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102609 | Budzyn | Nicholas | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 107547 | Buffard | Sebastien | M | Occitanie | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 101797 | Buhler | Kent | M | NC | US | 16 | Cruel Jewel 106m 2021 (Finisher) |
| 100932 | Bujer | Ken | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 108401 | Bukowski | Thomas | M | CA | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107832 | Bukszpan | Amy | F | Florida | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 110021 | Bulajic | Veselin | M | Västra Götalands län | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 107198 | Buley | Mark | M | Uae | AE | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 109470 | Bullock | Jonathan | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101485 | Bunting Lamos | Sarah | F | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 106019 | Buraglio | Donald | M | CA | US | 16 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 105858 | Burakian | Eli | M | VT | US | 16 | Twisted Branch 100k 2021 (19 hours) |
| 108653 | Burant | Kevin | M | NC | US | 1 | Moab 240 238m 2021 (102 hours) |
| 107521 | Burch | Greg | M | DE | US | 1 | Umstead 100m 2021 (Finisher) |
| 108936 | Burch | Ryan | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 102058 | Burdette | Matthew | M | MD | US | 4 | Mohican 100m 2020 (Finisher) |
| 110192 | Burg | Elizabeth | F | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 102656 | Burger | Andy | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 104103 | Burgess | Brady | M | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 110147 | Burgess | Michaela | F | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108344 | Burgr | Robert | M | North Dakota | US | 1 | Superior 100 100m 2021 (Finisher) |
| 108055 | Burke | Ken | M | Ny | US | 1 | Moab 240 238m 2021 (102 hours) |
| 110884 | Burke | Matthew | M | Alabama | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 109486 | Burke | Shaun | M | Colorado | US | 1 | Moab 240 238m 2021 (102 hours) |
| 107886 | Burke | Tyler | M | California | US | 1 | Bryce 100m 2021 (Finisher) |
| 104303 | Burket | Blake | M | CA | US | 2 | Yeti 100m 2020 (Finisher) |
| 103214 | Burmaster | Travis | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 109525 | Burmeister | Jeremy | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110637 | Burnett | Jimmy | M | Arizona | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 101843 | Burnett | Lucas | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 101777 | Burns | Christine | F | IA | US | 4 | Indiana 100m 2021 (Finisher) |
| 101126 | Burns | Rebecca | F | GA | US | 2 | Bighorn 100m 2021 (Finisher) |
| 107894 | Burns | Zachary | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104348 | Burpee | Atlee | M | PA | US | 16 | Grindstone 100m 2021 (Finisher) |
| 104448 | Burrier | Jamie | M | OH | US | 2 | Mohican 100m 2020 (Finisher) |
| 110031 | Burris | Lester | M | Indiana | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 104360 | Burrows | Keith | M | NZL | NZ | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 109826 | Burrows | Matt | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 108745 | Burt | Chuck | M | Georgia | US | 1 | Yeti 100m 2020 (Finisher) |
| 108516 | Burtch | Matthew | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109101 | Burton | Julien | M | NA | BE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 103039 | Burton | Shona | F | AUS | AU | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 102471 | Buse | Timothy | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 103714 | Bush | Robin | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 110850 | Bussey | Patrick | M | Alabama | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 100826 | Bustard | Chris | M | MA | US | 64 | Pinhoti 100m 2020 (Finisher) |
| 110123 | Bustos | Andrew | M | Alabama | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 107369 | Butler | James | M | Gloucestershire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 106727 | Butler | Rebecca | F | 8 | Tarawera 100M 100m 2020 (30 hours) | ||
| 108759 | Button | Jorl | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 104466 | Butz | Monika | F | MD | US | 4 | Rim to River 100m 2021 (Finisher) |
| 107928 | Buurma | Nicole | F | WA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 100866 | Buzansky | John | M | PA | US | 2 | Hennepin 100m 2021 (Finisher) |
| 109315 | Buzko | Yaroslav | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108054 | buzzeo | lisa | F | az | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109292 | Byler | Jared | M | Pennsylvania | US | 1 | Burning River 100m 2021 (Finisher) |
| 105158 | Byrd | Jared | M | MD | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 104799 | Byrne | Gavin | M | IRL | IE | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110729 | Byrne | Tom | M | Amman | GB | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 100170 | Byrne | Tommy | M | WI | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 103489 | Caballero | Rosendo | M | AZ | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 109874 | Cabanas | Lynnard | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108853 | Cabanillas Carrillo | Rafael | M | Madrid | ES | 1 | Transgrancanaria 125k 2021 (28 hours) |
| 110166 | Cabbage | Matthew | M | TN | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 108767 | Cabbat | Christopher | M | CA | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108988 | Cadieux | Matthew | M | MA | US | 1 | Laurel Highlands 70.5m 2020 (20 hours) |
| 109523 | Cadwell | Brian | F | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107622 | Cady | Michael | M | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109978 | Cady | Robert | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107077 | Cahez | Thibaud | M | France | FR | 16 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 108785 | Cahill | Anthony | M | Dublin | IE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 104773 | Calcagnino | Denise | F | NY | US | 1 | Burning River 100m 2021 (Finisher) |
| 104237 | Caldecourt | Peter | M | WI | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 104661 | Calder | Phil | M | NZL | NZ | 4 | Tarawera 100M 100m 2021 (30 hours) |
| 102014 | Calderone | Desiree | F | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 110319 | Calderone | Patrick | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 107515 | Caldwell | Emily | F | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 104714 | Calimano | Chris | M | NY | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110675 | Calitz | Pieter | M | Western Cape | ZA | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 109677 | Calkins | Craig | M | MO | US | 1 | Waldo 100k 2021 (17 hours) |
| 101854 | Callahan | Bob | M | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 103522 | Callans | Jc | M | OR | US | 8 | Siskiyou Outback 100k 2021 (17 hours) |
| 110092 | Calleja Muñoz | Jaime | M | Madrid | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 100922 | Calvert | Jeff | M | PA | US | 32 | Hellgate 100k 2020 (17 hours) |
| 104485 | Calvert | Renee | F | PA | US | 2 | Hellgate 100k 2020 (17 hours) |
| 104010 | Calzetta | Christopher | M | CA | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 105788 | Camann | Doug | M | NJ | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107308 | CAMARA | CAS | M | CA | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109616 | Camargo | Pj | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 101929 | Camastro | Jordan | M | AZ | US | 2 | Hennepin 100m 2021 (Finisher) |
| 110160 | Cambier | Pascal | M | Luxemburg | BE | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 102384 | Camenisch | Thomas | M | CHE | CH | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110890 | Campanella | Jared | M | GA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105223 | Campbell | Bryan | M | IN | US | 8 | Bear, The 100m 2020 (Finisher) |
| 101898 | Campbell | Dan | M | MT | US | 8 | Bear, The 100m 2020 (Finisher) |
| 103392 | Campbell | David | M | TX | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 108269 | Campbell | Jackie | F | Pennsylvania | US | 1 | Hennepin 100m 2021 (Finisher) |
| 109358 | Campbell | Jessica | F | Canterbury | NZ | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 102816 | Campbell | Kevin | M | TN | US | 4 | Pinhoti 100m 2021 (Finisher) |
| 104124 | Campbell | Matt | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 103983 | Campbell | Neil | M | OR | US | 16 | Waldo 100k 2021 (17 hours) |
| 107640 | Campbell | Robert | M | Somerset | GB | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100386 | Campbell | Sheldon | M | OH | US | 16 | Pinhoti 100m 2020 (Finisher) |
| 108993 | Candie | Malone | F | Ca | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110719 | Canessa | Alberto | M | Italia | IT | 1 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 104268 | Canetta | Filippo | M | ITA | IT | 2 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 103355 | Canfield | Jesse | M | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 100972 | Cannaday | Kevin | M | CO | US | 32 | Canyons, The 100k 2021 (19 hours) |
| 109337 | Cannon | Jeff | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109646 | Cannon | Keri | F | CA | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 104358 | Cantrell | Matt | M | IN | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 104622 | Capel | Jenny | F | NV | US | 2 | IMTUF 100m 2021 (Finisher) |
| 105795 | Capili | Aleksis | M | PHL | PH | 16 | Hong Kong 100K 100k 2020 (23 hours) |
| 108610 | Cappadora | Vincent | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108750 | Carbajal | Kristin | F | Ca | US | 1 | Western States 100m 2021 (Finisher) |
| 105760 | Carden | Delilah | F | MT | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 104014 | Cardenas | Adam | M | VA | US | 8 | Waldo 100k 2021 (17 hours) |
| 104025 | Cardoso | Germano | M | PRT | PT | 16 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 105975 | Caren | Neal | M | NC | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 106219 | Carey | Jack | M | LA | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107851 | Carey | Jordan | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 108143 | Carillion | Val | M | Florida | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107450 | Carl | Samantha | F | WA | US | 1 | Bryce 100m 2021 (Finisher) |
| 105362 | Carlson | Lance | M | AZ | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 110049 | Carlton | Will | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110663 | Carminati | Patrick | M | ain | US | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 104557 | Carmon | Amanda | F | LA | US | 2 | Hennepin 100m 2021 (Finisher) |
| 110390 | Carney | Dan | M | IN | US | 1 | Hennepin 100m 2021 (Finisher) |
| 107479 | Caro | Frank | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 108564 | Carolino | Hugo | M | Leiria | PT | 1 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 103146 | Carolus | Garett | M | IN | US | 8 | Indiana 100m 2021 (Finisher) |
| 107457 | Carr | Dena | F | IL | US | 1 | Indiana 100m 2021 (Finisher) |
| 100899 | Carr | Steven | M | AL | US | 32 | Bighorn 100m 2021 (Finisher) |
| 110559 | Carr | Thomas | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 103102 | Carranza | Antonio | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 110905 | Carranza | Gustavo | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104917 | Carreon | Miguel | M | NE | US | 2 | HOKA Bandera 100k 2021 (17 hours) |
| 109661 | Carrier | Guillaume | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106102 | Carroll | Anne | F | FL | US | 4 | Long Haul 100m 2021 (Finisher) |
| 101307 | Carroll | Donal | M | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 108137 | Carroll | Jessica | F | IL | US | 1 | Yeti 100m 2021 (Finisher) |
| 103376 | Carroll | Matt | M | AZ | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 100805 | Carroll | Tom | M | IL | US | 2 | Superior 100 100m 2021 (Finisher) |
| 104063 | Carson | Joel | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 101701 | Carstairs | Robert | M | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 101213 | Carter | Colton | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 110469 | Carter | Daniel | M | Alabama | US | 1 | No Business 100m 2021 (Finisher) |
| 102080 | Carter | Deron | M | OR | US | 8 | Wasatch Front 100m 2021 (Finisher) |
| 104195 | Carter | Emily | F | NC | US | 2 | Grindstone 100m 2021 (Finisher) |
| 100617 | Carter | Jonathan | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 104736 | Carter | Tara | F | CO | US | 4 | Bear, The 100m 2020 (Finisher) |
| 110072 | Cartier | Nathan | M | CA | US | 1 | Leona Divide 100k 2021 (16 hours) |
| 108561 | casey | Clark | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109740 | Casey | Luke | M | Montana | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 104276 | Casper-Shipp | Magdalena | F | IL | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100308 | Cassady | Brent | M | GA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 104664 | Cassan | Stefano | M | ITA | IT | 32 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101882 | Cassano | Andrew | M | NV | US | 2 | Zion 100k 2021 (19 hours) |
| 109203 | Cassel | Joachim | M | London | GB | 1 | Transgrancanaria 125k 2021 (28 hours) |
| 109329 | Castellari | Aldo | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 106436 | Castellucci | Donald | M | CA | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 104000 | Castignola | Demetrio | M | ITA | IT | 4 | Tuscany Crossing 103k 2021 (21 hours) |
| 108072 | Castillo | Maria | F | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109847 | Casto | Amanda | F | WA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 101219 | Castonguay | David | M | QC | CA | 4 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 103461 | Catanglan | Lexie | F | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 109111 | Cates | Mary | F | Tennessee | US | 1 | Yeti 100m 2021 (Finisher) |
| 105321 | Caton | Andrew | M | AUS | AU | 4 | Blackall 100K 100k 2021 (18 hours) |
| 110441 | Catti | Lorenzo | M | Italy | IT | 1 | Abbots Way 125k 2021 (28 hours) |
| 105885 | Cauchon | Jean-François | M | QC | CA | 8 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 103076 | Cavallo | Giuseppe | M | PA | US | 16 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101621 | Cavanaugh | Brian | M | MI | US | 2 | Mohican 100m 2020 (Finisher) |
| 107710 | Cavanaugh | Chris | M | OH | US | 1 | Burning River 100m 2020 (Finisher) |
| 108198 | Cavanaugh | Mike | M | Wisconsin | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 105405 | Cavanough | Shaun | M | AUS | AU | 2 | Blackall 100K 100k 2021 (18 hours) |
| 110893 | Cavatore | Philippe | M | VA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 100534 | Cavey | David | M | VA | US | 2 | Never Summer 103k 2021 (23 hours) |
| 107413 | Cazorla | Julien | M | London | GB | 1 | Autumn 100m 2021 (Finisher) |
| 107580 | cease | niall | M | co | US | 1 | Never Summer 103k 2021 (23 hours) |
| 108312 | Cedano | Sérgio | M | São Paulo | BR | 1 | Brazil 135 135m 2021 (Finisher) |
| 101868 | Celaya | Brian | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 105739 | Celikbas | Aytug | M | ON | CA | 8 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109496 | Cellier | Sébastien | M | Rhône-Alpes | US | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 109455 | Cerna | Juan | M | NV | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 106487 | Cerny | Martin | M | SVK | SK | 2 | Stefanik Trail 145k 2021 (32 hours) |
| 108308 | Cervantes | Joel | M | Pennsylvania | US | 1 | Zion 100m 2021 (Finisher) |
| 103855 | Cervantes | Jose | M | ID | US | 16 | IMTUF 100m 2020 (Finisher) |
| 108692 | Cesena | Gabriel | M | VA | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 101878 | Chacon | Lucia | F | CA | US | 8 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 100081 | Chaffee | Rufus | M | MA | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 109864 | Chafkin | Max | M | NY | US | 1 | Eastern States 100m 2021 (Finisher) |
| 102698 | Chahl | Tara | F | AB | CA | 64 | Lost Soul Ultra 100k 2021 (21 hours) |
| 101803 | Chalk | Darren | M | GBR | GB | 8 | Race to the Stones 100k 2021 (17 hours) |
| 106166 | Chalmers | Stuart | M | GBR | GB | 16 | Autumn 100m 2021 (Finisher) |
| 110886 | Chalmet | Wim | M | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 109389 | Chaloupka | Mark | M | Ohio | US | 1 | Burning River 100m 2020 (Finisher) |
| 108755 | Chamberlain | Mckay | M | Utah | US | 1 | Bryce 100m 2021 (Finisher) |
| 102481 | Chamberlin | Chris | M | WA | US | 1 | Western States 100m 2021 (Finisher) |
| 102526 | Chambers | Pete | M | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 105532 | Chamoun | Michael | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 106739 | Chan | Kai Kong | M | 4 | Hong Kong 100K 100k 2020 (23 hours) | ||
| 102689 | Chan | Kam | M | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 103158 | Chan | Wayne | M | MA | US | 8 | Laurel Highlands 70.5m 2021 (20 hours) |
| 103174 | Chandler | Todd | M | MO | US | 4 | Burning River 100m 2021 (Finisher) |
| 104162 | Chandler-Raley | Michelle | F | FL | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 107484 | Chanev | Kaloyan | M | Varna | BG | 1 | Istria 128k 2021 (28 hours) |
| 108397 | Chaney | Mather | M | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 105708 | Chang | Jordan | M | VA | US | 32 | Hellgate 100k 2020 (17 hours) |
| 103045 | Chang | Kelly | F | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 110677 | Chapello | Andrew | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 102666 | Chapin | William | M | OR | US | 4 | Waldo 100k 2021 (17 hours) |
| 107351 | chapman | alan | M | mn | US | 1 | Superior 100 100m 2021 (Finisher) |
| 110413 | Chapman | Casey | M | Ca | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109169 | Chapman | Joshua | M | Indiana | US | 1 | Mohican 100m 2021 (Finisher) |
| 107503 | Chapman | Peter | M | DC | US | 1 | Grindstone 100m 2021 (Finisher) |
| 108686 | Chapman | Tyler | M | BC | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 100954 | Chapman | Vernon | M | CO | US | 2 | Never Summer 103k 2020 (23 hours) |
| 109713 | Chase | Brad | M | NV | US | 1 | Bear, The 100m 2020 (Finisher) |
| 101360 | Chase | David | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 100325 | Chastain | Sean | M | NC | US | 4 | Never Summer 103k 2021 (23 hours) |
| 108466 | Chate | Tristan | M | Ticino | CH | 1 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 101943 | Chavez | Anthony | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 107301 | Chavez | Armando | M | NM | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 107834 | Chavez | Michael | M | Colorado | US | 1 | Bighorn 100m 2021 (Finisher) |
| 103662 | Chea | Felix | M | TN | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 100098 | Cheal | Mark | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 109981 | Cheatham | Scott | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 102228 | Chellino | Trena | F | GA | US | 32 | Bighorn 100m 2021 (Finisher) |
| 108402 | Chen | Gang | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 108354 | Chen | Henry | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 100841 | Chen | Ying | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 102862 | Cheng | Megan | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 107501 | Chernowski | Joseph | M | GA | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 101660 | Chervyakov | Alexander | M | RUS | RU | 8 | Golden Ring 100K 100k 2021 (18 hours) |
| 108286 | Cheshire | Ellen | F | UT | US | 1 | Never Summer 103k 2020 (23 hours) |
| 103160 | Chestnutt | Leigh | F | GA | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 101443 | Cheung | Kashing | M | HKG | HK | 4 | Hong Kong 100K 100k 2020 (23 hours) |
| 109258 | Cheung | Ruby | F | CA | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 103362 | Chiaramonte | Jasmine | F | PA | US | 4 | Burning River 100m 2021 (Finisher) |
| 100944 | Chiasson | Hailey | F | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 105230 | Chiasson | Joanne | F | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 101370 | Chidester | Jason | M | GA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 102227 | Chiknavaryan | Stanislav | M | WA | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 105697 | Chipman | Corey | M | UT | US | 2 | Bear, The 100m 2021 (Finisher) |
| 109339 | Chirgwin | Natalie | F | OR | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107498 | Chirico | Austin | M | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101900 | Chisholm | Paul | M | ON | CA | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108843 | Chittenden | Stuart | M | Surrey | GB | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100898 | Chiu | Cynthia | F | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 103012 | Chmel | Zdenek | M | CZE | CZ | 8 | Krakonosova Stovka 100k 2021 (22 hours) |
| 110660 | Cho | Autumn | M | ca | US | 1 | Zion 100k 2021 (19 hours) |
| 102104 | Cho | Yung Hae | F | OR | US | 16 | Rio Del Lago 100m 2021 (Finisher) |
| 101863 | Choi | Soon-Chul | M | AZ | US | 32 | Leona Divide 100k 2021 (16 hours) |
| 109347 | Chojnicki | Bartosz | M | Wielkopolska | PL | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110458 | CHOPPE | YANN | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107459 | Chord | Chris | M | MI | US | 1 | Zion 100m 2021 (Finisher) |
| 101624 | Chow | Kevin | M | CA | US | 8 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 107574 | Christensen | Andrea | F | UT | US | 1 | Zion 100k 2021 (19 hours) |
| 104602 | Christensen | Garret | M | DC | US | 64 | Canyons, The 100k 2021 (19 hours) |
| 103610 | Christian | Paul | M | GBR | GB | 4 | Thames Path 100 100m 2021 (Finisher) |
| 100102 | Christianson | Katie | F | OR | US | 32 | Canyons, The 100k 2021 (19 hours) |
| 104878 | Christman | Eric | M | PA | US | 2 | Hellgate 100k 2020 (17 hours) |
| 109708 | christol | jean-emmanuel | M | Ain | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 100798 | Christoni | Timothy | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 109809 | Christopher | Robbie | M | Georgia | US | 1 | No Business 100m 2021 (Finisher) |
| 110589 | Christopher | Saint-Alme | M | France | RE | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 106655 | Christophersen | Mikkel | M | DNK | DK | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 104072 | Christopherson | David | M | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 103145 | Chuan | Wang | M | CHN | CN | 2 | Ultra Trail Ninghai 108k 2020 (28 hours) |
| 108923 | Chuderski | Jaymes | M | CA | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 109262 | CHUPIN | CEDRIC | M | California | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 101956 | Church | Henry | M | GBR | GB | 32 | Thames Path 100 100m 2020 (Finisher) |
| 102854 | Churgovich | Raymond | M | CO | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 110698 | Chute | Anthony | M | Pennsylvania | US | 1 | Grindstone 100m 2021 (Finisher) |
| 109925 | Ciabarri | Michele | M | Sondrio | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110421 | Cibils | Gonzalo | M | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109851 | Cibulka | Jeramia | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109282 | Ciccomascolo | Lauren | F | California | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 106744 | Ciccone | Alexander | M | 8 | Twisted Branch 100k 2021 (19 hours) | ||
| 103660 | Ciclitira | Simone | M | ITA | IT | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 107610 | Cirstoveanu | Daniel | M | Bucharest | RO | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101030 | Cissel | Shawn | M | MD | US | 8 | Laurel Highlands 70.5m 2021 (20 hours) |
| 102575 | Ciuchta | Brian | M | CA | US | 4 | IMTUF 100m 2020 (Finisher) |
| 104089 | Cizio | Greg | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 108539 | Claassen | Daniel | M | Western Cape | ZA | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110082 | Claflin | Elizabeth | F | CO | US | 1 | Zion 100k 2021 (19 hours) |
| 110823 | Clancy | Eoin | M | AB | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 107906 | clark | alan | M | Middlesex | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 105709 | Clark | Andrew | M | CA | US | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107542 | Clark | Daniel | M | England | GB | 1 | Autumn 100m 2021 (Finisher) |
| 101622 | Clark | Derek | M | WV | US | 2 | Laurel Highlands 70.5m 2020 (20 hours) |
| 110369 | Clark | Erin | F | MT | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107150 | Clark | Joshua | M | FL | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 103057 | Clark | Matthew | M | UT | US | 1 | Western States 100m 2021 (Finisher) |
| 108338 | Clark | Mike | M | AZ | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 110318 | Clark | Stephen | M | Zurich | CH | 1 | Tor des Géants 330k 2021 (132 hours) |
| 104001 | Clark | Trey | M | AL | US | 8 | Pinhoti 100m 2020 (Finisher) |
| 110022 | Clarke | Chris | M | London | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 103306 | Clarke | John | M | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 107932 | Clarke | Liz | F | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 108617 | Clarke | Tim | M | Cork | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 108334 | Clavijo | Fabio | M | VA | US | 1 | Zion 100m 2021 (Finisher) |
| 105106 | Clay | Emily | F | MD | US | 8 | Hellgate 100k 2020 (17 hours) |
| 108449 | Clay | Jennifer | F | Surrey | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 106182 | Clayton | Ryan | M | IN | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 109125 | Clayton | Seth | M | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 109210 | Cleary | Richard | M | Kerry | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 110280 | Clemens | Lindsey | F | GA | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 110785 | Clément | Martin | M | Capital region | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 109509 | Clements | Rob | M | TN | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 107323 | Clemons | Chandler | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 108256 | Clemons | Johnny | M | Tennessee | US | 1 | Hardrock 100m 2021 (Finisher) |
| 109805 | Clendenning | Jason | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 110856 | Clendinning | Gareth | M | Canterbury | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 109581 | Clerc | Christophe | M | Vaud | CH | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 100873 | Clews | Charlotte | F | ME | US | 4 | Zion 100k 2021 (19 hours) |
| 109723 | CliffOrr | Nicholas | M | ID | US | 1 | IMTUF 100m 2020 (Finisher) |
| 100967 | Clink | Andy | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 100807 | Clinthorne | Ashley | F | CO | US | 32 | Bear, The 100m 2020 (Finisher) |
| 100876 | Clinthorne | Jonathan | M | CO | US | 32 | Bear, The 100m 2021 (Finisher) |
| 107597 | Cloidt | Joseph | M | NY | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108895 | Clouston | Kyle | M | NE | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107908 | Cluff | Chelsea | F | NV | US | 1 | Zion 100k 2021 (19 hours) |
| 108684 | Cocco | Luis | M | Fl | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109302 | Codino | Moe | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 100547 | Cody | Ryan | M | MT | US | 2 | Bighorn 100m 2021 (Finisher) |
| 104897 | Coen | Andy | M | NE | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 109371 | Coen | Melinda | F | NJ | US | 1 | Worlds End 100k 2020 (19 hours) |
| 109109 | Coggins | Sally | F | New South Wales | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109885 | Cognet-Fante | Gerard | M | Hessen | DE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 104815 | Cohen | Joey | M | OH | US | 1 | Western States 100m 2021 (Finisher) |
| 103898 | Cohen | Jonathan | M | CO | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 110548 | Cohen | Mitchell | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 100855 | Cohen | Stuart | M | CO | US | 64 | Quicksilver 100k 2021 (16 hours) |
| 109585 | Coker | Derek | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 100680 | Colantuono | Lucas | M | ARG | AR | 16 | Patagonia 112k 2021 (27 hours) |
| 105755 | Colclough | Skye | F | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 108224 | Cole | Jill | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108340 | Cole | Patrick | M | Colorado | US | 1 | Bear, The 100m 2021 (Finisher) |
| 107794 | Cole-Husseini | Jacqueline | F | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 104201 | Coleman | Jason | M | MO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 104220 | Coleman | Kelli | F | TX | US | 2 | Hennepin 100m 2021 (Finisher) |
| 107826 | Coleman | Shea | F | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 103348 | Collar | Natalie | F | CO | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 106745 | Collick | Neal | M | 8 | Black Canyon 100k 2021 (17 hours) | ||
| 108133 | Collier | Eric | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 103384 | Collin | Mat | M | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 100007 | Collin | Robert | M | WA | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 100834 | Collins | Beth | F | TX | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 101133 | Collins | Brandon | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 110810 | Collins | Chuck | M | MO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109425 | Collins | Jason | M | Ireland | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 107763 | Collins | Jordan | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 104182 | Collins | Keith | M | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 105969 | Collins | Matt | M | NY | US | 4 | Sean O'Brien 100k 2021 (16 hours) |
| 106746 | Collins | Pierre | M | QC | CA | 4 | Black Canyon 100k 2020 (17 hours) |
| 110567 | Collum | Sean | M | Hertfordshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 103913 | Colt | Jeffrey | M | CO | US | 4 | IMTUF 100m 2021 (Finisher) |
| 105345 | Columbia | Patrick | M | TN | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 110154 | Comi | Matt | M | AL | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 110827 | Commander | Bruce | U | FL | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 103800 | Compagnone | Brian | M | VA | US | 8 | Long Haul 100m 2021 (Finisher) |
| 102412 | Composto | Nicolas | M | MT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 108024 | Compton | Matthew | M | Ca | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 106503 | Conboy | John | M | VA | US | 8 | Rim to River 100m 2021 (Finisher) |
| 105940 | Condon | Brian | M | CO | US | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105636 | Condrati | Cesar | M | BRA | BR | 2 | Brazil 135 135m 2021 (Finisher) |
| 103951 | Conine | Scott | M | GA | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 101261 | Conklin | Daniel | M | MI | US | 2 | Eastern States 100m 2021 (Finisher) |
| 101798 | Conley | Mark | M | RI | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 108326 | Conlin | Jared | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108273 | Connally | Ian | M | Texas | US | 1 | Never Summer 103k 2021 (23 hours) |
| 103165 | Connell | William | M | NY | US | 8 | Burning River 100m 2021 (Finisher) |
| 105147 | Connelly | Aaron | M | OH | US | 2 | Mohican 100m 2021 (Finisher) |
| 100517 | Conner | David | M | CO | US | 16 | Superior 100 100m 2021 (Finisher) |
| 107933 | Conner | Jeffrey | M | Nevada | US | 1 | Zion 100k 2021 (19 hours) |
| 107234 | Conner | William | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109825 | Conner | Yolanda | F | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 110781 | Connolly | John | M | Dunbartonshire | US | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 101574 | Connolly | Nicholas | M | NV | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 103047 | Conrad | Jacob | M | OH | US | 16 | Mohican 100m 2021 (Finisher) |
| 109491 | Conrad | Jacquelyn | F | California | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109685 | Conrad | Sara | F | Minnesota | US | 1 | Superior 100 100m 2021 (Finisher) |
| 110260 | Conroy | Kelly | F | VIC | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 109305 | Conte | Julien | M | Quebec | CA | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 107492 | Convey | Jillian | F | London | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 101065 | Cook | Benjamin | M | AZ | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 109573 | Cook | Dan | M | CO | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 102059 | Cook | Kate | F | MA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 102861 | Cook | Kelly | M | TX | US | 16 | Arkansas Traveler 100m 2021 (Finisher) |
| 101468 | Cook | Sean | M | VA | US | 2 | Yeti 100m 2020 (Finisher) |
| 107241 | Cooke | Marty | U | Idaho | US | 1 | IMTUF 100m 2021 (Finisher) |
| 110309 | Cooksey | Andy | M | Surrey | GB | 1 | Kullamannen 100m 2021 (Finisher) |
| 103090 | Coolman | Mindy | F | NE | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100859 | Coon | Benjamin | M | CO | US | 16 | HOKA Bandera 100k 2020 (17 hours) |
| 108611 | Coon | Chad | M | IDAHO | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 100100 | Cooper | Alan | M | GBR | GB | 4 | South Downs Way 100m 2021 (Finisher) |
| 109974 | Cooper | Ali | F | Georgia | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 108048 | Cooper | Brandon | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 110397 | Cooper | Caleb | M | FL | US | 1 | Zion 100m 2021 (Finisher) |
| 105655 | Cooper | Dustin | M | NC | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 102430 | Cooper | Jacob | M | NV | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 107403 | Cooter | Jordan | M | Y | US | 1 | Hellgate 100k 2020 (17 hours) |
| 110829 | Copenhaver | Christopher | M | CO | US | 1 | Bryce 100m 2020 (Finisher) |
| 110367 | Corbett | Jason | M | Arizona | US | 1 | Zion 100k 2021 (19 hours) |
| 101531 | Corbett | Michelle | F | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 101077 | Corbett | Sam | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 103029 | Corbett | Trish | F | AZ | US | 2 | Yeti 100m 2021 (Finisher) |
| 105224 | Corey | Brian | M | UT | US | 8 | Bear, The 100m 2021 (Finisher) |
| 105197 | Corgard | Brian | M | MN | US | 8 | Superior 100 100m 2021 (Finisher) |
| 104405 | Corino | Marylou | F | ON | CA | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109160 | Cornia | Grant | M | California | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109966 | Corona | Vincent | M | Tennessee | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 101172 | Coronado | Lisa | F | CA | US | 16 | Zion 100k 2020 (19 hours) |
| 108209 | Correa | Sarah | F | Ca | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107196 | Corrigan | Rachel | F | Virginia | US | 1 | Hellgate 100k 2019 (17 hours) |
| 108108 | Corriher | Charlotte | F | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 104868 | Cortis | Kate | F | CO | US | 2 | Zion 100k 2021 (19 hours) |
| 108014 | Cossairt | Jacob | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 108682 | Costa | Jennifer | F | Cork | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 108456 | Costello | Michael | M | Tipperary | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 109438 | Costilow | Brian | M | TN | US | 1 | Grindstone 100m 2021 (Finisher) |
| 102060 | Cote | Gilles | M | HI | US | 32 | Zion 100k 2021 (19 hours) |
| 101890 | Cothenet | Paul | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 109524 | Cottrell | Bill | M | OR | US | 1 | Mohican 100m 2021 (Finisher) |
| 105992 | Cottrell | Jesse | M | WV | US | 2 | Rim to River 100m 2021 (Finisher) |
| 107380 | Cottrill | Sue | F | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 104144 | Coughlan | Sean | M | AR | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101962 | Coughlin | Drew | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 100052 | Coughlin | Pamela | F | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 104037 | Coulombe | Martin | M | ON | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 101502 | Coulter | Carleen | F | IL | US | 8 | Mohican 100m 2020 (Finisher) |
| 109390 | Coumes | Chris | M | HERAULT | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 109215 | Courson | Michael | M | IN | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 106753 | Courtice | Greg | M | 8 | Black Canyon 100k 2020 (17 hours) | ||
| 102185 | Coury | Jamil | M | AZ | US | 16 | Hardrock 100m 2021 (Finisher) |
| 104955 | Coury | Nick | M | AZ | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 109642 | Cousins | Stephen | M | West Sussex | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 108407 | Couvreux | Brendan | M | Colorado | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 106654 | Covey | Kate | F | CO | US | 16 | Never Summer 103k 2021 (23 hours) |
| 101019 | Cowdry | Tremayne | M | GBR | GB | 2 | Thames Path 100 100m 2021 (Finisher) |
| 109372 | Cowlin | Robert | U | Essex | GB | 1 | Autumn 100m 2021 (Finisher) |
| 108886 | Cox | Bryan | M | West Virginia | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 104875 | Cox | Chase | M | VA | US | 4 | Hellgate 100k 2020 (17 hours) |
| 107997 | Cox | Joe | M | MO | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 102976 | Cox | Kevin | M | TN | US | 32 | Georgia Death Race 74m 2020 (23 hours) |
| 106005 | Cox | Phil | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 110045 | Cox | Ryan | M | MD | US | 1 | Rim to River 100m 2021 (Finisher) |
| 104877 | Cox | Samuel | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 109437 | Coxe | Chuck | M | NV | US | 1 | Zion 100k 2021 (19 hours) |
| 102808 | Coyle | Joseph | M | PA | US | 8 | Worlds End 100k 2021 (19 hours) |
| 109057 | Craig | Jason | M | ACT | AU | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 110095 | Crain | Mark | M | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 104876 | Crain | Matt | M | IL | US | 16 | Bear, The 100m 2020 (Finisher) |
| 108870 | Cramer | Carmen | F | NY | US | 1 | Yeti 100m 2021 (Finisher) |
| 109395 | Cramer | Daniel | M | CT | US | 1 | Burning River 100m 2021 (Finisher) |
| 109206 | Cramton | melissa | F | MI | US | 1 | Indiana 100m 2021 (Finisher) |
| 108028 | Crandall | Brett | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 109745 | Crawford | Akiko | U | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108601 | Crawford | Sam | M | London | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 101995 | Crawford | Steven | M | AZ | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 100872 | Crays | Jon | M | OH | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 105159 | Crehan | Matthew | M | AUS | AU | 2 | Surf Coast Century 100k 2020 (16 hours) |
| 108067 | Creighton | Jeff | M | oh | US | 1 | Mohican 100m 2020 (Finisher) |
| 106618 | Crellin | Brennan | M | UT | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 100504 | Crews | Brandon | M | NC | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 110442 | Crick | Anthony | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101580 | Criminale | Lucca | F | WA | US | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 106755 | Criminale | Martin | M | WA | US | 2 | Waldo 100k 2021 (17 hours) |
| 100030 | Crispino-Taylor | Anne | F | OR | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 109103 | Croke | Ciaran | M | Dublin | IE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108622 | Crosby | Cole | M | Rhode Island | US | 1 | Hellgate 100k 2019 (17 hours) |
| 100123 | Croset | Sacha | M | CHE | CH | 2 | Trail Verbier St Bernard 111k 2021 (33 hours) |
| 108426 | Cross | Peter | M | CA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 104560 | Crow | Tim | M | OH | US | 32 | Kettle Moraine 100m 2021 (Finisher) |
| 100868 | Crowe | Jason | M | IL | US | 1 | Western States 100m 2021 (Finisher) |
| 105055 | Crumley | Brent | M | ID | US | 1 | Western States 100m 2021 (Finisher) |
| 102986 | Crump | Robin | F | TN | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 108395 | Crutchfield | Jen | F | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 108006 | Cruz | Jose | M | Utah | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 103004 | Culmo | Brian | M | UT | US | 4 | Bear, The 100m 2021 (Finisher) |
| 102715 | Culp | Kelvin | M | TX | US | 4 | Zion 100m 2021 (Finisher) |
| 104271 | Culpepper | Chris | M | TX | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110832 | Cumberland | Matt | M | WA | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 106161 | Cummings | Alex | M | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 109835 | Cummins | Jason | M | MT | US | 1 | Bighorn 100m 2021 (Finisher) |
| 105720 | Cundy | Lance | M | MN | US | 2 | Waldo 100k 2021 (17 hours) |
| 101633 | Cunningham | Jake | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 104386 | Cunningham | Richie | M | UT | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 106492 | Curley | Jacob | M | VA | US | 2 | Hellgate 100k 2019 (17 hours) |
| 101650 | Curley | Matt | M | IL | US | 16 | Cuyamaca 100k 2021 (17 hours) |
| 100748 | Currano | Allen | M | NM | US | 16 | Run Rabbit Run 100m 2021 (Finisher) |
| 108172 | Curry | Michael | M | CA | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103868 | Curtin | David | M | IN | US | 16 | Cruel Jewel 106m 2021 (Finisher) |
| 109910 | Curtin | Jim | M | IL | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109195 | Curtis | Anna | F | WI | US | 1 | Mohican 100m 2021 (Finisher) |
| 105160 | Cushma | John | M | GA | US | 64 | Superior 100 100m 2021 (Finisher) |
| 101289 | Cusick | Michael | M | CA | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 108544 | Cusseneers | Nick | M | Antwerpen | BE | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 104758 | Cuttle | Ben | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 102289 | Cygan | Piotr | M | POL | PL | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100893 | Cyphers | Meaghan | F | CO | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 104440 | Cyra | Bruce | M | WA | US | 128 | Rio Del Lago 100m 2021 (Finisher) |
| 105927 | Cyril | Bernard | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100393 | Czapski | Piotr | M | POL | PL | 8 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 105188 | Czerwonka | Dave | M | RI | US | 4 | Twisted Branch 100k 2021 (19 hours) |
| 103323 | D'Alessio | Joseph | M | MA | US | 32 | Cruel Jewel 106m 2021 (Finisher) |
| 106094 | D'Onofrio | Kathy | F | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 110345 | Daane | Lisa | F | Nevada | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 103547 | Dabrowski | Cezary | M | POL | PL | 4 | Ponitrianska 105k 2020 (24 hours) |
| 107859 | Daff | Jody | F | Victoria | AU | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 110422 | Dahlén | Mats | M | Västmanland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 109957 | Dahlgren | Anders | M | Göteborg | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 104245 | Dailey | Bruce | M | ME | US | 16 | Leadville Trail 100m 2021 (Finisher) |
| 100858 | Dains | Brad | M | IA | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104607 | Dalal | Satpal | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110528 | Dale | Harold | M | LA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109092 | Dalenius | Johan | M | Östergötland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 109643 | Dalla Pozza | Luca | M | VI | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 103239 | Dallas | Andrew | M | ID | US | 8 | IMTUF 100m 2021 (Finisher) |
| 103633 | Dalmasso | Luca | M | ITA | IT | 8 | Tuscany Crossing 103k 2021 (21 hours) |
| 106761 | Dalton | Mike | M | 2 | No Business 100m 2021 (Finisher) | ||
| 100041 | Daly | Brian | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 102282 | Daly | Jimmy | M | CO | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 108294 | Daly | Sean | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107705 | Damiano | Katie | F | PA | US | 1 | Yeti 100m 2020 (Finisher) |
| 102621 | Damone | Darren | M | PA | US | 4 | Worlds End 100k 2020 (19 hours) |
| 110311 | Dana | Aaron | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108476 | Dancisinova | Lucia | F | Slovakia | SK | 1 | Ponitrianska 105k 2020 (24 hours) |
| 105004 | Danehey | Melissa | F | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 100951 | Daniel | Natalie | F | NC | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 104172 | Daniel | Ronnie | M | AR | US | 8 | Umstead 100m 2021 (Finisher) |
| 105592 | Daniel | Samantha | F | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 108235 | Daniel | Tobias | M | TX | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 104402 | Danyliw | Roman | M | PA | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 102217 | Darby | Daniel | M | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 100169 | Darcy | Mathew | M | AUS | AU | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 109064 | Daresta | James | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108643 | Darigo | Austin | M | PA | US | 1 | Burning River 100m 2020 (Finisher) |
| 104715 | Darley | Vince | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 103755 | Dart | Hank | M | ID | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 104329 | Darwin | Adam | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103325 | Dasbach | Chris | M | MI | US | 2 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 102257 | Dase | Brandon | M | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 107805 | Dattatreya | Robi | M | Noord Holland | NL | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110514 | Davenport | Brian | M | OR | US | 1 | Never Summer 103k 2020 (23 hours) |
| 106762 | Davenport | Trevor | M | 8 | Waldo 100k 2021 (17 hours) | ||
| 105285 | Davery | Gilles | M | CA | US | 2 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 105921 | Davidson | Kris | M | GBR | GB | 2 | Autumn 100m 2020 (Finisher) |
| 105262 | Davidson | Sara | F | MD | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 104684 | Davies | Dai | M | GBR | GB | 4 | Tarawera 100M 100m 2020 (30 hours) |
| 107468 | Davies | James | M | Virginia | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108984 | Davies | Megan | F | Other | GB | 1 | Ultra Trail Vipava Valley 106k 2021 (25 hours) |
| 108774 | Davies | Rhys | M | Cambridgeshire | GB | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104671 | Davies | Stephen | M | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 105134 | Davis | Aaron | M | ID | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 108478 | Davis | Allen | M | West Glamorgan | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 109458 | Davis | Ethan | M | ID | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 108798 | Davis | Flannery | F | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101105 | Davis | Heather | F | AB | CA | 16 | Black Canyon 100k 2020 (17 hours) |
| 104633 | Davis | Jack | M | ZAF | ZA | 32 | SkyRun 100k 2019 (28 hours) |
| 108483 | Davis | James | M | Norfolk | GB | 1 | Autumn 100m 2021 (Finisher) |
| 110211 | Davis | Jason | M | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110276 | Davis | Joe | M | Montana | US | 1 | Bear, The 100m 2021 (Finisher) |
| 110404 | Davis | Jon | M | CO | US | 1 | Hardrock 100m 2021 (Finisher) |
| 110894 | Davis | Jonathan | M | NC | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108153 | Davis | Kehr | F | MA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 103440 | Davis | Loren | M | MT | US | 8 | Bear, The 100m 2021 (Finisher) |
| 110275 | Davis | Melissa | F | MT | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 105298 | Davis | Morgan | F | IL | US | 2 | Tunnel Hill 100m 2020 (Finisher) |
| 107698 | Davis | Nicholas | M | CO | US | 1 | Bigfoot 206m 2021 (85 hours) |
| 101153 | Davis | Peter | M | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 107264 | Davis | Scott | M | Florida | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 102242 | Davis | Tammy | F | MN | US | 8 | Superior 100 100m 2021 (Finisher) |
| 106764 | Davis | Tim | M | 8 | Zion 100k 2020 (19 hours) | ||
| 110642 | Davis | Wes | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105091 | Davison | Ted | M | TX | US | 2 | HOKA Bandera 100k 2021 (17 hours) |
| 105268 | Dawes | Jaime | F | NM | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 100014 | Dawson | Matt | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108868 | Dawson | Peter | M | OR | US | 1 | Waldo 100k 2021 (17 hours) |
| 108742 | Day | David | M | Georgia | US | 1 | Yeti 100m 2021 (Finisher) |
| 108949 | Day | Peter | M | North Yorkshire | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 102042 | Day | Steve | M | BC | CA | 16 | Black Canyon 100k 2020 (17 hours) |
| 104310 | Daylor | Shaun | M | MA | US | 32 | Eastern States 100m 2021 (Finisher) |
| 108913 | de Boer | Wieke | F | AZ | US | 1 | Zion 100m 2021 (Finisher) |
| 101723 | De Bord | Elisia | F | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 109433 | de Groof | Shawn | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 106563 | De La Rosa | Ezequiel | M | CA | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 107339 | De La Vega | Christopher | M | CA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108481 | de Narp | Augustin | M | France | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107557 | De Neve | Pieter | M | Please select a state | BE | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 105458 | De Schaepmeester | Christof | M | BEL | BE | 8 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 110346 | Dea | Kenrick | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 100776 | Deacon | Mitchell | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 109019 | Dean | Brian | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 104376 | Dean | Mathew | M | AUS | AU | 32 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 105680 | Deaton | David | M | AZ | US | 2 | Waldo 100k 2021 (17 hours) |
| 102105 | Debevc | Amanda | F | OH | US | 16 | Hellgate 100k 2020 (17 hours) |
| 109446 | DeBrosse | Adam | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109225 | Dechant | Mitchell | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110445 | Deford | Paul | M | OH | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102624 | Degrado | Tim | M | MN | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 104100 | DeGroff | Sierra | F | NV | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 103697 | Degroot | Jeffrey | M | MI | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 106768 | Deguchi | Nick | M | California | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 110678 | DeHerrera | Jarred | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110284 | deHesse | Margaret | F | Arizona | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110243 | Dehn | Charles | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 103246 | Dejonghe | Bryan | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 109406 | Del Piccolo | Daniel | M | Hampshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 103796 | Delaney | Patrick | M | CA | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 106770 | Delbecq | Jean-Francois | M | 4 | Ultra Trail Vipava Valley 106k 2021 (25 hours) | ||
| 100472 | Delicata | Rob | M | GBR | GB | 2 | Thames Path 100 100m 2021 (Finisher) |
| 101961 | Delille | Remi | M | NC | US | 128 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102628 | Dell Angelo | Robert | M | CA | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 103320 | Dellamonica | Lesley | F | CA | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 110261 | DeMaria | Christopher | M | West Virginia | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109986 | DeMayo | Rob | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 108377 | DeMers | Roger | M | CO | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101118 | Demichele | Megan | F | CO | US | 2 | Umstead 100m 2021 (Finisher) |
| 103635 | Den Hartog | Sander | M | NLD | NL | 2 | Tuscany Crossing 103k 2021 (21 hours) |
| 109067 | Deneffe | Guillaume | M | Liège | BE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 109005 | Denis | Laurence | U | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 106120 | Dennis | Erick | M | OR | US | 4 | Siskiyou Outback 100k 2021 (17 hours) |
| 110636 | Dennison | Brian | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 106537 | Denoyelle | Thomas | M | FRA | FR | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108672 | Denson | Marco | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 109202 | Depaoli | Mattia | M | Trento | IT | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102943 | Deras | Michael | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110182 | Derbyshire | Alex | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 104239 | Deren-Lewis | Ann | F | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 102524 | Derouen | Brian | M | WV | US | 4 | Rim to River 100m 2021 (Finisher) |
| 104456 | Desantis | Nick | M | NJ | US | 2 | Canal Corridor 100 100m 2021 (Finisher) |
| 103634 | Descombes | Pierre-Yves | M | FRA | FR | 4 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 101591 | Deshaies | Eric | M | QC | CA | 8 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 101671 | Deshpande | Shashank | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 109895 | Desille | Clément | M | Haute Savoie | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 100263 | Desmarais | Maxime | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108813 | DeSocio | Jeri | F | California | US | 1 | Zion 100k 2020 (19 hours) |
| 109706 | Detamore | Matt | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 105499 | Detmer | Maia | F | NV | US | 16 | Bryce 100m 2021 (Finisher) |
| 102404 | Detrick | Mike | M | NC | US | 8 | Mohican 100m 2021 (Finisher) |
| 106772 | Deutsch | Eric | M | 16 | Hallucination (Run Woodstock) 100m 2021 (Finisher) | ||
| 103540 | Devine | Adam | M | NY | US | 4 | Burning River 100m 2021 (Finisher) |
| 110236 | Devine | Rob | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 110473 | DeVona | Lisa | F | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 100812 | DeVore | Laurel | F | CO | US | 8 | Never Summer 103k 2021 (23 hours) |
| 101204 | Devreese | Joseph | M | CA | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 106773 | Devreese | Monica | F | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) | ||
| 107409 | Dewey | Jonathon | M | MI | US | 1 | Yeti 100m 2020 (Finisher) |
| 106774 | Dewey | Nathan | M | 2 | Leadville Trail 100m 2021 (Finisher) | ||
| 107513 | DeWitt | Lisa | F | OR | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110401 | DeWitt | Trevor | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 108373 | Dhaliwal | Avijit | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109558 | Di Giacomo | Fabio | M | Italia | IT | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 103356 | Diak | Peter | M | MD | US | 4 | Grindstone 100m 2021 (Finisher) |
| 109326 | Diamond-Husmann | Kara | F | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105745 | Diaz | Omar | M | TX | US | 2 | Bryce 100m 2020 (Finisher) |
| 103959 | Dib | Nathan | M | CA | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 110629 | Diboun | Jamal | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 101753 | Diboun | Yassine | M | OR | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 106775 | Dicanio | Michael | M | 4 | Hellgate 100k 2020 (17 hours) | ||
| 103870 | Dickason | Benjamin | M | CO | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 107485 | Dicke | Ben | M | IL | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 107573 | Dickson | Sean | M | TX | US | 1 | Burning River 100m 2021 (Finisher) |
| 110269 | Diebel | Mallory | F | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 107609 | Diehl | Melody | F | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 103856 | Dietrich | Travis | M | CA | US | 32 | Cuyamaca 100k 2021 (17 hours) |
| 102843 | Dill | Todd | M | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 105543 | Dimitrov | Ivan | M | BGR | BG | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109947 | Dimond | Matthew | M | OR | US | 1 | Waldo 100k 2021 (17 hours) |
| 109235 | Dimuantes | Michael | M | Oxfordshire | GB | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101811 | Dina | Matthew | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 102745 | Dinan | Drew | M | OR | US | 16 | Siskiyou Outback 100k 2021 (17 hours) |
| 110327 | Dinc | Yekta Yigit | M | - | TR | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 100452 | Dines | Tim | M | TN | US | 32 | Arkansas Traveler 100m 2021 (Finisher) |
| 109289 | Dion | Sébastien | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109369 | Dion-Poitras | Joel | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 110730 | DiPlacido | Nico | M | Ontario | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 107771 | Dirks | Nathaniel | M | PA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 101617 | Dittman | Bill | M | AZ | US | 1 | Western States 100m 2021 (Finisher) |
| 110218 | Ditty | Sketch | M | Georgia | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 109027 | Diven | Patrick | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 104570 | Diveronica | Matthew | M | OR | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 107471 | Dixon | Emi | F | Wiltshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 101456 | Dobler | Matthew | M | AZ | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 101270 | Dobson | Jason | M | OR | US | 1 | Waldo 100k 2021 (17 hours) |
| 107456 | Docta | Alex | M | UT | US | 1 | Superior 100 100m 2021 (Finisher) |
| 105437 | Dodd | Carter | M | IN | US | 2 | Arkansas Traveler 100m 2021 (Finisher) |
| 107279 | dodd | timothy | M | fl | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109772 | Doerksen | John | M | BC | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 105087 | Doffin | Yann | M | FRA | FR | 32 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102880 | Doherty | Lance | M | MA | US | 16 | Yeti 100m 2020 (Finisher) |
| 108995 | Dohn | Jamison | M | Pennsylvania | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 106777 | Doiron | Guy | M | Ontario | CA | 16 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 110764 | Dolce | Shelaine | F | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 100965 | dolde | willow | M | WA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 109186 | Doldorf | Judy | F | VA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 109066 | Dolezal | Ben | M | Texas | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 102012 | Dollar | Chris | M | AL | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 108196 | Dolovacky | John | M | OH | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 107900 | Domican | Thomas | M | Wicklow | IE | 1 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 110888 | Dominick | Jason | M | Massachusetts | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 100391 | Donnelly | Matt | M | NJ | US | 2 | Worlds End 100k 2021 (19 hours) |
| 102081 | Donohoe | Brendan | M | WA | US | 128 | Canyons, The 100k 2021 (19 hours) |
| 110645 | Donovan | Michael | M | Queensland | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 106534 | Doolan | Alexander | M | UT | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 108538 | Doolin | Jennifer | F | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 110427 | dorantes | rene | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109906 | Doring | Brian | M | North Carolina | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 103652 | Dorobantu | Virgil | M | NV | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 107203 | Doros | Michael | M | CA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 104780 | Dorph | Joseph | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104797 | Dorsey | Darrel | M | MD | US | 2 | Rim to River 100m 2021 (Finisher) |
| 107988 | Dosch | Damian | M | Graubünden | CH | 1 | SwissPeaks 170k 2021 (Finisher) |
| 108243 | Dosch | Lisa | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109666 | Doucette | Jennifer | F | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 103997 | Dougherty | Heather | F | DC | US | 4 | Umstead 100m 2021 (Finisher) |
| 108944 | Dougherty | Mike | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 108232 | Doughty | Cheryl | F | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109102 | Dournel | Yannick | M | NA | FR | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 100306 | Dowdell | Michael | M | OH | US | 16 | Pinhoti 100m 2020 (Finisher) |
| 108817 | Dowling | Chris | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 102718 | Downes | Tom | M | IRL | IE | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108325 | Dragelin | Alec | M | TN | US | 1 | Zion 100k 2021 (19 hours) |
| 107278 | Draper | Cody | M | Utah | US | 1 | Western States 100m 2021 (Finisher) |
| 108803 | Drazer | Michael | M | IN | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107377 | Dreamer | Rainbow | M | Oregon | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 109112 | Dreelan | Ian | M | Wiltshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 103691 | Dresher | Russell | M | MA | US | 32 | Sean O'Brien 100k 2020 (16 hours) |
| 108152 | Drew | Kat | F | BC | CA | 1 | Western States 100m 2021 (Finisher) |
| 102029 | Drewes | Conor | M | NV | US | 4 | Castle Peak 100k 2021 (21 hours) |
| 104273 | Drexler | Benjamin | M | MN | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 110240 | Driscoll | Amelia | F | Alabama | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102005 | Driscoll | Scott | M | AL | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 109807 | Drouin | Veronique | F | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107190 | Drowne | Jeremy | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 107912 | Drozda | Kimberly | F | Pennsylvania | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 100453 | Drozdiak | Nick | M | DC | US | 4 | Hellgate 100k 2019 (17 hours) |
| 109689 | Druelle | Nicolas | M | CO | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 101361 | Dryer | Brenda | F | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 104978 | Dschaak | Tyler | M | CO | US | 2 | IMTUF 100m 2021 (Finisher) |
| 108026 | DUARTE MOTA | JOSE MANUEL | M | SANTARÉM | PT | 1 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 107902 | Dube | Tera | F | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107862 | DuBois | Bernadette | F | Fl | US | 1 | Long Haul 100m 2021 (Finisher) |
| 105000 | Dubois | Matthew | M | CA | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 108757 | Dubova | Michael | M | Virginia | US | 1 | Hellgate 100k 2020 (17 hours) |
| 107528 | Dubrovin | Oleksandr | M | Kyiv | UA | 1 | Trail Verbier St Bernard 111k 2021 (33 hours) |
| 106241 | Duckett | Matthew | M | GBR | GB | 2 | Autumn 100m 2021 (Finisher) |
| 103600 | Ducommun | Julien | M | CHE | CH | 4 | Swiss Alps 100k 100k 2021 (22 hours) |
| 101668 | Duffee | Jeramy | M | IL | US | 16 | Cascade Crest 100m 2021 (Finisher) |
| 108674 | Duggal | Stu | M | Devon | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 109058 | Duggan | Cameron | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 102530 | Duggan | Michael | M | AUS | AU | 16 | Blackall 100K 100k 2020 (18 hours) |
| 102944 | Dugovich | Brian | M | MT | US | 8 | Siskiyou Outback 100k 2021 (17 hours) |
| 110750 | Duke | Meg | F | Tennessee | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 106390 | Dukes | Don | M | OH | US | 2 | Burning River 100m 2021 (Finisher) |
| 103184 | Dumenjich | Liam | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 101846 | Dumitrescu | Bogie | M | CO | US | 32 | Hardrock 100m 2021 (Finisher) |
| 106781 | Dumont | Frank | M | 2 | Javelina Jundred 100m 2021 (Finisher) | ||
| 108366 | Dunaway | patrick | M | Ca | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108029 | Duncan | Mark | M | North Yorkshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 107581 | Duncan | Stewart | M | Ga | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107675 | Duncan | Toby | M | London | GB | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103590 | Dundon | Stephen | M | NSW | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103309 | Dunham | Darin | M | AL | US | 8 | Indiana 100m 2021 (Finisher) |
| 104143 | Dunkels | Antony | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 109031 | Dunkle | Derek | M | OH | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 101517 | Dunn | Laura | F | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 102563 | Dunn | Matthew | M | AUS | AU | 2 | Surf Coast Century 100k 2020 (16 hours) |
| 103678 | Dunning | Patrick | M | MI | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 100018 | Dunstall | Lee | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 107442 | Duplant | Bradley | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108128 | Duran | Joanna | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 101694 | Durkin | Michael | M | WA | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 107215 | Durnall | Toby | M | Shropshire | GB | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102287 | Durocher | Etienne | M | BC | CA | 4 | Canadian Death Race 125k 2021 (24 hours) |
| 107866 | Durocher | Thomas | M | Loiret | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104682 | Dus | Sergiy | M | GBR | GB | 4 | Thames Path 100 100m 2021 (Finisher) |
| 101300 | Dutro | Dave | M | ID | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 110534 | Duvaker | Tim | M | ZH | CH | 1 | Swiss Alps 100k 100k 2021 (22 hours) |
| 109599 | Dwitiandi | Dendi | M | Jawa Barat | ID | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100219 | Dyas | Adam | M | OH | US | 8 | Worlds End 100k 2020 (19 hours) |
| 106783 | Dye | Aaron | M | 2 | HOKA Bandera 100k 2021 (17 hours) | ||
| 102199 | Dye | Shannon | F | TN | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 101942 | Dykes | Gene | M | PA | US | 4 | Mohican 100m 2021 (Finisher) |
| 107496 | Dykstra | Justin | M | MI | US | 1 | Zion 100k 2021 (19 hours) |
| 106616 | Dyrland | Debbie | F | AB | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 110181 | Dzenis | Juris | M | Sigulda | LV | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 104488 | Eady | Stefan | M | GA | US | 8 | Bighorn 100m 2021 (Finisher) |
| 109130 | Eager | Jessica | F | PA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 103469 | Earle | Lieko | F | CO | US | 16 | IMTUF 100m 2021 (Finisher) |
| 107943 | Earley | Michelle | F | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 104383 | Early | Patrick | M | VA | US | 2 | Umstead 100m 2021 (Finisher) |
| 102139 | Early | Trent | M | TX | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102645 | Earnshaw | Dave | M | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 102519 | Earnshaw | Eric | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 107406 | Eastman | Chad | M | AB | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 110080 | Eaton | Michael | M | King | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 101987 | Ebener | Kenneth | M | SC | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 104361 | Ebrahem | Mina | M | EGY | EG | 8 | Bigfoot 206m 2021 (85 hours) |
| 110013 | Eckardt | David | M | IN | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 103871 | Eckardt | Scott | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 104289 | Eckert | Malte | M | DEU | DE | 16 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 105609 | Eddy | Joshua | M | NV | US | 8 | Waldo 100k 2021 (17 hours) |
| 108472 | Edelmann | Susanne | F | Hamburg | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 109181 | Edenteg | Johan | M | Uppland | SE | 1 | Taby Extreme Challenge 100 100m 2020 (Finisher) |
| 104427 | Eder | Al | M | OH | US | 2 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 105840 | Ederle | Nicole | F | TX | US | 2 | HOKA Bandera 100k 2021 (17 hours) |
| 105078 | Edgar | Elisa | F | PA | US | 32 | Twisted Branch 100k 2021 (19 hours) |
| 108090 | EDGERTON | RICK | M | Colorado | US | 1 | Never Summer 103k 2020 (23 hours) |
| 104962 | Edminster | Robert | M | UT | US | 8 | Bear, The 100m 2021 (Finisher) |
| 109878 | Edvik | Peter | M | Skåne | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 108631 | Edward | Adler | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 103088 | Edwards | Alina | F | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 110040 | Edwards | Carrie | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 107367 | Edwards | Jason | M | Utah | US | 1 | Bear, The 100m 2020 (Finisher) |
| 100487 | Edwards | Michael | M | ZAF | ZA | 2 | Karkloof 100m 2020 (Finisher) |
| 109472 | Edwards | Randall | M | North Carolina | US | 1 | Long Haul 100m 2020 (Finisher) |
| 105271 | Edwards | Ruston | M | WA | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 110091 | Edwards | Taylor | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 106787 | Efta | Caleb | M | 16 | IMTUF 100m 2020 (Finisher) | ||
| 103810 | Egbert | Neeraj | M | KY | US | 8 | Mohican 100m 2021 (Finisher) |
| 109870 | Eggers | Ryan | M | UT | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106025 | Egolf | Jeffrey | M | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 101212 | Ehasz | James | M | AZ | US | 64 | Javelina Jundred 100m 2021 (Finisher) |
| 110608 | Ehland | Sean | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 108071 | Eichenlaub | Ryan | M | California | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 102007 | Eide | Chris | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 110466 | Eitzmann | Nick | M | NE | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108608 | Ekerot | Peter | M | N/a | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 108909 | Eklöf | Jonas | M | Halland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 104413 | Eklof | Klas | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 109827 | Ekman | Fredrik | M | Halland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 106282 | Elam | Jimmy | M | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 101447 | Elam | Matt | M | TX | US | 32 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106520 | Elderbrock | Mark | M | OH | US | 2 | Burning River 100m 2021 (Finisher) |
| 104905 | Eldien | Terry | M | MN | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 108802 | Elebring | David | M | Vastra Gotaland | US | 1 | Kullamannen 100m 2020 (Finisher) |
| 109157 | Eleraky | Lizzy | F | MS | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 103570 | Elgan | Caroline Olivia | F | SWE | SE | 16 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108428 | Elich | Eric | M | ZH | NL | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102806 | Elkins Jr | Richard | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104260 | Elliott | Robert | M | ID | US | 2 | IMTUF 100m 2021 (Finisher) |
| 110273 | Elliott | Sean | M | Oxfordshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 108023 | Elliott | Thomas | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 105698 | Ellis | John | M | HKG | HK | 4 | Hong Kong 100K 100k 2020 (23 hours) |
| 107505 | Ellis | Shannon | F | MI | US | 1 | Indiana 100m 2021 (Finisher) |
| 108080 | Ellis | William | M | Tennessee | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103986 | Ellison | Aaron | M | MD | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108194 | Ellwood | Graham | M | Wellington | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 101996 | Elmore | Chantal | F | CO | US | 2 | Never Summer 103k 2021 (23 hours) |
| 108873 | Elmore | Spencer | M | Georgia | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109975 | Elms | Peter | M | Kent | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 109726 | Elosua Francia | Iñaki | M | Girona | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108693 | Els | Nicholas | M | Free state | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 105308 | Elsaesser | Ralf | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 104259 | Elsbury | Mike | M | WI | US | 4 | Kettle Moraine 100m 2021 (Finisher) |
| 102767 | Emerson | Andy | M | MO | US | 2 | Never Summer 103k 2021 (23 hours) |
| 108375 | Emerson | David | M | ID | US | 1 | Bear, The 100m 2021 (Finisher) |
| 104547 | Emis | Jon | M | CA | US | 8 | Beaverhead 100k 2021 (19 hours) |
| 105843 | Encarnacion | Paul | M | MD | US | 32 | Rim to River 100m 2021 (Finisher) |
| 110861 | Eng | Erik | M | Österåker | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 100811 | Engel | Llewelyn | F | DC | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 108113 | England | Jerry | M | WA | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 104595 | England | Mark | M | WI | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 103960 | England | Stephen | M | NY | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 107658 | Englehart | Thomas | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 102836 | English | Garrett | M | UT | US | 16 | Beaverhead 100k 2020 (19 hours) |
| 105505 | English | Nick | M | MT | US | 2 | Bighorn 100m 2021 (Finisher) |
| 100324 | Ennis-King | Jonathan | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107412 | Enoch | Jillian | F | VA | US | 1 | No Business 100m 2021 (Finisher) |
| 109610 | Enrica | Gouthier | F | italy | IT | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101481 | Ensley | Jacqueline | F | KY | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 108079 | Eppenbaugh | Sara | F | INDIANA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 107340 | Equina | Miguel | M | IL | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 105150 | Eriks | Laura | F | IL | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 108571 | Eriksen | Mads | M | København N. | DK | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109824 | Eriksson | Sigurd | M | Trondelag | NO | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110048 | Erskine | Rob | M | CO | US | 1 | Bear, The 100m 2021 (Finisher) |
| 107905 | Erskine | William | M | VIC | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102416 | Escofier | Yannick | M | BEL | BE | 8 | Transgrancanaria 125k 2020 (28 hours) |
| 105991 | Espalin | Tanya | F | TX | US | 1 | Western States 100m 2021 (Finisher) |
| 101046 | Espino | Albert | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 102462 | Espinosa | Diego | M | AZ | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 110175 | Espinosa Valdez | Cinthia | F | Mexico | MX | 1 | Pinhoti 100m 2021 (Finisher) |
| 100583 | Espinoza | Phillip | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 106790 | Espulgar | Ryan | M | 2 | Laurel Highlands 70.5m 2020 (20 hours) | ||
| 100916 | Espy | Isaac | M | AL | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107454 | Ess | Kevin | M | TN | US | 1 | Tunnel Hill 100m 2020 (Finisher) |
| 110375 | Esselburn | Doug | M | OH | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109009 | Estabrook | Eric | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 103290 | Estes | Damin | M | CA | US | 16 | Black Canyon 100k 2021 (17 hours) |
| 108359 | Estes | Wes | M | California | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110121 | Estipona | Matthew | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102173 | Estler | Toby | M | WA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 110283 | Estrada | Emily | F | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 108541 | Etherington | Helen | F | Northamptonshire | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 103562 | Ettinghausen | Ed | M | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 109915 | Eury | Mark | M | CO | US | 1 | IMTUF 100m 2020 (Finisher) |
| 107295 | Evans | Adam | M | Warwickshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 105533 | Evans | Dave | M | CA | US | 16 | IMTUF 100m 2020 (Finisher) |
| 107792 | Evans | Frank | M | MO | US | 1 | Hennepin 100m 2021 (Finisher) |
| 105053 | Evans | Ron | M | PA | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 109460 | Evans-Orville | Keith | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 105492 | Eveland | Christopher | M | TN | US | 32 | No Business 100m 2021 (Finisher) |
| 108507 | Evernden | Bruce | M | Queensland | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 108766 | Eversole | Sean | M | FL | US | 1 | Moab 240 238m 2021 (102 hours) |
| 107206 | Everson | David | M | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 100331 | Ewing | Amy | F | TX | US | 8 | Never Summer 103k 2021 (23 hours) |
| 102558 | Ewing | Andrew | M | CA | US | 8 | Hardrock 100m 2021 (Finisher) |
| 100542 | Ewing | Brett | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 108479 | Eyster | Theodore | M | Michigan | US | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 100761 | Faber | Jeff | M | WA | US | 2 | Bear, The 100m 2020 (Finisher) |
| 108819 | Fabian | Carlo | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 109127 | Fabianich Mcclay | John | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 109061 | Facchino | Carlo | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105305 | Fagan | Brian | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 107463 | Fagan | Kristen | F | Washington | US | 1 | IMTUF 100m 2021 (Finisher) |
| 110320 | fages | perrine | F | Ar riyad | SA | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 103196 | Fahy | Timothy | M | CO | US | 16 | Run Rabbit Run 100m 2021 (Finisher) |
| 108552 | Fairman | Jeffrey | U | Maryland | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104909 | Fall | Chris | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 100881 | Fallon | Victor | M | CO | US | 32 | Never Summer 103k 2021 (23 hours) |
| 102314 | Fan | Zhenhua | M | CA | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 106793 | Fannin | Tyler | M | 4 | Black Canyon 100k 2020 (17 hours) | ||
| 103154 | Fansler | Jacob | M | HI | US | 4 | HURT 100m 2020 (Finisher) |
| 102152 | Farahani | Arya | M | WA | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 108556 | Fargo | Erik | M | OH | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109351 | Farley | Jamie | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109880 | Farmer | Nicholas | M | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 108317 | Farmers | Andrew | M | Sabah | MY | 1 | Borneo Ultra-Trail Marathon 100m 2020 (50 hours) |
| 107852 | Farnsworth | Sophia | F | Massachusetts | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 109852 | Farrell | Jane | F | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 100244 | Farrow | Clare | F | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 108005 | Fate | Lee | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107953 | Fatland | Anson | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 100635 | Faught | David | M | ID | US | 8 | IMTUF 100m 2021 (Finisher) |
| 109382 | Favell | Mathew | M | Gloucestershire | GB | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108278 | Faye | Anthony | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100379 | Fearing | Aaron | M | WI | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 108586 | Febbraro | Amber | F | CO | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 106796 | Fedele | Domenico | M | Italy | IT | 2 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 101978 | Federkeil | Rick | M | NZL | NZ | 2 | Tarawera 100K 102k 2021 (17 hours) |
| 106029 | Feehrer | David | M | CA | US | 16 | Cuyamaca 100k 2021 (17 hours) |
| 103041 | Fegyveresi | John | M | AZ | US | 8 | Bighorn 100m 2021 (Finisher) |
| 108558 | Fein | Miriam | F | NY | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 105192 | Feinhaus | Dima | M | MA | US | 2 | Hardrock 100m 2021 (Finisher) |
| 101106 | Feldman | Angela | F | AZ | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 100897 | Feldman | Neil | M | MA | US | 32 | HOKA Bandera 100k 2020 (17 hours) |
| 102556 | Felix | Rick | M | AZ | US | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 102419 | Feller | Bill | M | OH | US | 4 | Burning River 100m 2020 (Finisher) |
| 105314 | Fendik | Erik | M | ON | CA | 4 | Hellgate 100k 2019 (17 hours) |
| 108438 | Feng | Yi | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 105164 | Fenner | Bradley | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 105577 | Fennie | Karen | F | NY | US | 4 | Umstead 100m 2021 (Finisher) |
| 100208 | Fensterl | Jaime | F | OH | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 108025 | Fenton | Owen | M | Cork | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 107668 | Ferguson | Joshua | M | Maryland | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 107182 | Ferguson | Michael | M | NB | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 107469 | Ferguson | Tara | F | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110083 | Ferguson | Tiffany | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104707 | Fernandez | Gérôme | M | FRA | FR | 2 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 109201 | Fernandez | Jonathan | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107687 | Fernandez | Todd | M | Georgia | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 102155 | Ferrante | Mike | M | NY | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 105613 | Ferrara | Davide | M | ITA | IT | 8 | Abbots Way 125k 2021 (28 hours) |
| 106800 | Ferrara | Nicholas | M | PA | US | 32 | Hardrock 100m 2021 (Finisher) |
| 100699 | Ferraro | Davide | M | ITA | IT | 2 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 100711 | Ferree | Eric | M | PA | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 110498 | Ferrell | Evan | M | Virginia | US | 1 | No Business 100m 2021 (Finisher) |
| 109845 | FERRELL | THOMAS | M | OR | US | 1 | Zion 100m 2021 (Finisher) |
| 109806 | Ferrell | William | M | Tennessee | US | 1 | No Business 100m 2021 (Finisher) |
| 110557 | FERRER PLANA | JOSEP | M | GIRONA | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107730 | Ferrier | Nathan | M | MI | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 109107 | Ferrio | Adriano | M | MI | IT | 1 | Tor des Géants 330k 2021 (132 hours) |
| 109316 | Ferriol | Xyrus | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 105482 | Fersch | Sascha | M | DEU | DE | 2 | Istria 168k 2021 (Finisher) |
| 101636 | Fetter | Anthony | M | OR | US | 16 | Wasatch Front 100m 2021 (Finisher) |
| 109696 | Fetting | Stan | M | Queensland | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 108288 | Fetzer | Dan H | M | Utah | US | 1 | Zion 100k 2021 (19 hours) |
| 101833 | Fiandaca | Benjamin | M | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 107868 | Fiandaca | Sam | M | California | US | 1 | Burning River 100m 2020 (Finisher) |
| 105038 | Fiandeiro | Louis | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 104510 | Fiandeiro | Stefan | M | CA | US | 4 | Bryce 100m 2021 (Finisher) |
| 107354 | Fichtner | kristie | F | Michigan | US | 1 | Indiana 100m 2021 (Finisher) |
| 109154 | Fides | Martin | M | Slovakia | SK | 1 | Ponitrianska 105k 2020 (24 hours) |
| 108434 | field | troy | M | Auckland | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 104374 | Fiessinger | Christophe | M | WA | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 105490 | Figgins | Troy | M | CA | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108480 | File | Balázs | M | Pest | HU | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 110425 | Finch | Elanor | F | New South Wales | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104101 | Finegan | Sean | M | CA | US | 8 | Zion 100m 2021 (Finisher) |
| 100243 | Finger | Joshua | M | PA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 102576 | Fink | Michael | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 109431 | Finn | Charles | M | WA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 108952 | Finn-Atkins | Alexandra | F | New York | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108462 | Finocchio | Tim | M | MA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 109937 | Fiolek | Jeff | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108786 | Fiore | Joshua | M | NH | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 104165 | Fioroni | Gina | F | CO | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 104149 | Firth | Darren | M | GBR | GB | 8 | Race to the Stones 100k 2021 (17 hours) |
| 102229 | Fischel | Scott | M | CA | US | 64 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109110 | Fischer | Jody | M | QLD | AU | 1 | Blackall 100K 100k 2020 (18 hours) |
| 101223 | Fischer | Katherine | F | CA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 101599 | Fish | Dan | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 102590 | Fish | Derek | M | GBR | GB | 16 | Race to the Stones 100k 2021 (17 hours) |
| 107666 | Fisher | Charles | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 105375 | Fisher | Grace | F | MD | US | 2 | IMTUF 100m 2021 (Finisher) |
| 109346 | Fisher | Marta | U | OR | US | 1 | Hardrock 100m 2021 (Finisher) |
| 106803 | Fisher III | Wiley | M | 2 | Black Canyon 100k 2021 (17 hours) | ||
| 110833 | Fishet | Bridget | F | WA | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 109832 | Fishkind | Jason | M | NY | US | 1 | Zion 100m 2021 (Finisher) |
| 103428 | Fitch | Kelly | F | CA | US | 2 | IMTUF 100m 2020 (Finisher) |
| 107954 | Fitzpatrick | Timothy | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109729 | Flaherty | Matt | M | IN | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 100378 | Flake | Christoph | M | DEU | DE | 4 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 107553 | Flanary | James | M | CO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 100532 | Flannery | Kevin | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 108319 | Flannigan | Sean | M | NC | US | 1 | Zion 100k 2021 (19 hours) |
| 109073 | Flatlip | Scott | M | MT | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109293 | Flaws | Jeffrey | M | AB | CA | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103723 | Fleitz | Michael | M | OH | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 107992 | Fleming | Hunter | U | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 102704 | Fleming | Jeff | M | CA | US | 8 | Never Summer 103k 2021 (23 hours) |
| 109063 | Fletcher | Matt | M | UT | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100638 | Fletes | Sinuhe | M | MEX | MX | 8 | Oso Negro 100k 2020 (24 hours) |
| 103121 | Fleury | Andres | M | NC | US | 4 | Umstead 100m 2021 (Finisher) |
| 102403 | Flinders | Mary | F | WA | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 109593 | Flink | Brian | M | CO | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109306 | Flippin | Stefanie | F | CO | US | 1 | Tunnel Hill 100m 2020 (Finisher) |
| 107875 | Florczak | Annette | F | MA | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110542 | Flores | Melissa | F | Ca | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 107800 | Flores Cardiel | Carlos | M | Durango | MX | 1 | Oso Negro 100k 2020 (24 hours) |
| 110728 | Florian | Sergio | M | Hawaii | US | 1 | HURT 100m 2020 (Finisher) |
| 108597 | Flory | Ariela | F | Kentucky | US | 1 | Burning River 100m 2020 (Finisher) |
| 108592 | FLORY | Daniel | M | KY | US | 1 | Burning River 100m 2020 (Finisher) |
| 102805 | Flowerday | Crispin | M | CA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 109450 | Floyd | Richard | M | NC | US | 1 | Hellgate 100k 2019 (17 hours) |
| 108341 | Fluta | Chris | M | CO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107959 | Flynn | George | M | Tipperary | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 109270 | Foessel | Benjamin | M | Queensland | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102535 | Fogg | Dan | M | DC | US | 16 | Grindstone 100m 2021 (Finisher) |
| 108791 | Foglia | Ivan | M | Parma | IT | 1 | Abbots Way 125k 2021 (28 hours) |
| 110597 | Fogliato | Riccardo | M | Pennsylvania | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101676 | Foley | Adam | M | DE | US | 16 | Mohican 100m 2021 (Finisher) |
| 104858 | Foley | Christopher | M | WI | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 107131 | Foley | Heather | F | 16 | HOKA Bandera 100k 2021 (17 hours) | ||
| 108016 | Foley | Tom | M | Co.Kerry | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 106230 | Folkert | Darrel | M | CA | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 104306 | Fonda | Stephanie | F | MD | US | 4 | Canal Corridor 100 100m 2021 (Finisher) |
| 109015 | Fones | Madeline | F | CO | US | 1 | Bear, The 100m 2021 (Finisher) |
| 110252 | Fonseca | João | M | Setúbal | PT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110060 | Fonseca | Traci | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109147 | Fontaine | Anthony | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109506 | Fontaine | Romain | M | Isère | FR | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 100520 | Foote | Samuel | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 102389 | Forbes | Timothy | M | TN | US | 4 | Yeti 100m 2020 (Finisher) |
| 107567 | Force | Matthew | M | Ohio | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 108231 | Ford | Chad | M | WA | US | 1 | Zion 100k 2021 (19 hours) |
| 109252 | Ford | Isaiah | M | AZ | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108749 | Ford | Russell | M | TX | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109938 | Forehand | Christina | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 100860 | Foreman | Gary | M | AZ | US | 2 | Zion 100k 2020 (19 hours) |
| 104537 | Forgensi | Max | M | CO | US | 4 | Never Summer 103k 2020 (23 hours) |
| 102057 | Formosa | Anthony | M | CO | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 103832 | Forno | Cristobal | M | CHL | CL | 8 | Leadville Trail 100m 2021 (Finisher) |
| 100895 | Foroughi | Jaclyn | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110305 | Forrest | Heather | F | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110044 | Forsyth | Antonya | F | CA | US | 1 | Leona Divide 100k 2021 (16 hours) |
| 105683 | Forsyth | Graham | M | BC | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 107726 | Forsythe | Patrick | M | Utah | US | 1 | Bear, The 100m 2020 (Finisher) |
| 107673 | Fortin | Brenda | F | Massachusetts | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 106623 | Fortin | Matthieu | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108911 | Fortin | Pierre-Luc | M | Québec | CA | 1 | Tor des Géants 330k 2021 (132 hours) |
| 108271 | Foster | Graham | M | Georgia | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 107774 | Foster | Michelle | F | CO | US | 1 | Bear, The 100m 2021 (Finisher) |
| 106011 | Foster | Stephen | M | MO | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107987 | Fotheringham | Alannah | F | ON | CA | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 110875 | Fouillot | Nicolas | U | Rhône alpes | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 110016 | fournier | christophe | M | mayenne | FR | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 103114 | Fowler | Phillip | M | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107812 | Fox | Isaac | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102327 | Fox | Kevin | M | TX | US | 1 | Western States 100m 2021 (Finisher) |
| 107709 | Fox | Nelle | F | VA | US | 1 | Hellgate 100k 2020 (17 hours) |
| 103513 | Fox | Wallly | M | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 109956 | Fracchia | Kristin | F | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 100071 | Fraga | Tara | F | WA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 105614 | Fraher | Desmond | M | NZL | NZ | 2 | Tarawera 100K 102k 2021 (17 hours) |
| 102626 | Framnes | Karen | F | CA | US | 16 | Rio Del Lago 100m 2021 (Finisher) |
| 105676 | Francis | Aaron | M | OR | US | 2 | Waldo 100k 2021 (17 hours) |
| 109650 | Francis | Alex | M | WI | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 105612 | Francis | Hillery | F | NV | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 101979 | Francisco | Alex | M | MO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 108077 | frank | derek | M | Iowa | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110790 | Frank-Hensley | Amy | F | OH | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102801 | Frankel | Joshua | M | NY | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 102972 | Franklin | Zach | M | OH | US | 2 | Burning River 100m 2021 (Finisher) |
| 106523 | Frankowski | Michal | M | SWE | SE | 4 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 107210 | Frazer | Aaron | M | North Yorkshire | GB | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 110591 | Frazier | Angie | F | INdiana | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108068 | Frazier | Kyle | M | TX | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 107395 | fredenburg | denver | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 100327 | Frederick | Albert | M | WA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110077 | Frederiksen | Claus Ellgaard | M | Nordjylland | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 105122 | Freeman | Gordon | M | OR | US | 64 | Beaverhead 100k 2021 (19 hours) |
| 102520 | Freitag | Michael | M | DEU | DE | 4 | Black Canyon 100k 2020 (17 hours) |
| 104526 | French-Owen | Calvin | M | CA | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 101645 | Frerking | Lacey | F | NV | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107722 | Friant | Alexandra | F | Wa | US | 1 | Bryce 100m 2021 (Finisher) |
| 104893 | Frick | Tim | M | TX | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 107408 | friedman | Jason | M | NJ | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 105407 | Friedman | Jason | M | NY | US | 16 | Yeti 100m 2021 (Finisher) |
| 103595 | Fries | Stellan | M | SWE | SE | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103550 | Friess | Mark | M | OR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 109114 | Frigeri | Mattia | M | Parma | IT | 1 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 101054 | Frink | Megan | F | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109026 | Friskie | Robert | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 104425 | Fritsch | Jackie | F | MD | US | 2 | Yeti 100m 2020 (Finisher) |
| 102507 | Fritz | Aaron | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103441 | Fritz | Eric | M | AL | US | 128 | Mohican 100m 2020 (Finisher) |
| 109402 | Frizzarin | Luca | M | VI | IT | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 107268 | Froemming | Adam | M | MN | US | 1 | Yeti 100m 2020 (Finisher) |
| 105422 | Fromlak | Lori | F | PA | US | 2 | Hennepin 100m 2021 (Finisher) |
| 107326 | Fronczek | Eric | M | OH | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 108788 | frontierro | salvatore | M | ma | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 110239 | Frost | Bob | M | OR | US | 1 | Waldo 100k 2021 (17 hours) |
| 109079 | Frye | Adam | M | WA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 107280 | Fu | Chihping | M | CA | US | 1 | Bear, The 100m 2020 (Finisher) |
| 106808 | Fuchs | Trevor | M | 8 | Wasatch Front 100m 2021 (Finisher) | ||
| 103961 | Fuentes | Ernesto | M | MEX | MX | 8 | Castle Peak 100k 2021 (21 hours) |
| 109116 | Fuentes Rivera | Hector | M | San Salvador | SV | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101098 | Fujioka | Masazumi | M | WA | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 108419 | Fujishiro | Kiyo | M | Kanagawa | JP | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 110384 | Fulkerson | Ryan | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 103275 | Fuller | Andrew | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109831 | Fuller | Brian | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 110571 | Fuller | Josh | M | Wyoming | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109008 | Fuller | Michael | M | Minnesota | US | 1 | Superior 100 100m 2021 (Finisher) |
| 107214 | Fullerton | Andrew | M | OK | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 100864 | Fulmer | Kyle | M | CO | US | 32 | Hardrock 100m 2021 (Finisher) |
| 107635 | Fulton | Alan | M | ms | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 107147 | FULTON | MAX | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109297 | Funck | Sheelagh | F | Virginia | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 101007 | Fung | Leo | M | AB | CA | 64 | Quicksilver 100k 2021 (16 hours) |
| 110744 | Furey | Conor | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 109935 | Furlotte | Lee | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 108524 | Furtado | Timothy | M | MA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 110136 | Furunes | Erling | M | Viken | NO | 1 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 105629 | Futterer | Chris | M | CA | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 110238 | Gadbois | Evan | M | CT | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108589 | Gaffney | Erica | F | PA | US | 1 | Worlds End 100k 2020 (19 hours) |
| 101759 | Gagliardi | Michael | M | PA | US | 4 | Long Haul 100m 2020 (Finisher) |
| 109561 | Gagne | Eric | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109042 | Gagnon | Chris | F | IL | US | 1 | Yeti 100m 2021 (Finisher) |
| 105291 | Gagnon | Joseph | M | NY | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 109968 | Gaide | Matt | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104571 | Gaiser | Scott | M | MT | US | 16 | IMTUF 100m 2021 (Finisher) |
| 104901 | Gaitten | Joseph | M | OH | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 104104 | Galasso | Alex | M | NJ | US | 2 | Bear, The 100m 2020 (Finisher) |
| 104601 | Gale | Colton | M | OR | US | 16 | HOKA Bandera 100k 2020 (17 hours) |
| 109230 | Gale | Travis | M | KZN | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 105884 | Galerakis | Helen | F | AZ | US | 4 | Olympus Mythical Trail 100k 2021 (28 hours) |
| 108618 | Gallagher | Jacob | M | Iowa | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107325 | Gallagher | Robert | M | Ma | US | 1 | Zion 100k 2021 (19 hours) |
| 100912 | Gallant | Marc | M | NB | CA | 4 | Quebec Mega Trail 110k 2021 (22 hours) |
| 109378 | Gallay | Arnaud | F | Rhones-Alpes | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108584 | Gallego | Michael | M | North Carolina | US | 1 | Grindstone 100m 2021 (Finisher) |
| 108384 | Gallegos | Ventura | M | Texas | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 105882 | Gallenne | Christophe | M | FRA | FR | 32 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 101248 | Gallitano | Joseph | M | PA | US | 1 | Western States 100m 2021 (Finisher) |
| 105689 | Galloway | Carson | M | IA | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 103956 | Galloway | David | M | NC | US | 64 | Bighorn 100m 2021 (Finisher) |
| 109087 | Galyon | Jeremiah | M | California | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109304 | Gamble | Brian | M | TX | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 102244 | Gamboa | Mamerto | M | ESP | ES | 16 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 109317 | Gammill | Mike | M | MT | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 100083 | Gammon | Jack | M | GBR | GB | 8 | Thames Path 100 100m 2020 (Finisher) |
| 107989 | Gampp | Michael | M | OH | US | 1 | Grindstone 100m 2021 (Finisher) |
| 108423 | Gandhi | Aum | M | CA | US | 1 | Zion 100m 2021 (Finisher) |
| 107486 | Gano | Rachael | F | Alaska | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 101259 | Gapp | Nick | M | MI | US | 2 | Indiana 100m 2021 (Finisher) |
| 103067 | Garcia | Antonio | M | MEX | MX | 16 | HOKA Bandera 100k 2020 (17 hours) |
| 107363 | Garcia | Gabriel | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 104076 | Garcia | German | M | TX | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 101127 | Garcia | Jessica | F | WI | US | 2 | Hennepin 100m 2021 (Finisher) |
| 107715 | Garcia | Luis | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 100426 | Garcia | Paul | M | IL | US | 64 | Canal Corridor 100 100m 2021 (Finisher) |
| 100110 | Garcia | Rogelio | M | MEX | MX | 4 | Bighorn 100m 2021 (Finisher) |
| 110141 | GARCIA MESA | JOSE MANUEL | M | Andalucia | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107346 | Garcia-Carroll | Ryan | M | GA | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 101699 | Garcia-Fernandez | Jesus | M | CA | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 102186 | Gardner | Brian | M | PA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 107754 | Gardner | Garrett | M | Wisconsin | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107780 | Gardner | TJ | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103896 | Garewal | Tyler | M | CA | US | 128 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 105450 | Garneau | Simon | M | QC | CA | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 108989 | Garner | Heidi | F | Ca | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 109690 | Garner | Nate | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100211 | Garner | Paul | M | GBR | GB | 8 | Autumn 100m 2021 (Finisher) |
| 109600 | Garnes Rodríguez | José Antonio | M | Murcia | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 106814 | Garnett | Ian | M | 8 | Autumn 100m 2021 (Finisher) | ||
| 109572 | Garre | Miguel Ángel | M | Alicante | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 108257 | Garrelts | Teri | F | Indiana | US | 1 | Indiana 100m 2021 (Finisher) |
| 107802 | Garrett | Brett | M | Illinois | US | 1 | Hennepin 100m 2021 (Finisher) |
| 105985 | Garrett | Luke | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108176 | Garrigan | Sarah | F | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 106815 | Garris | Jordan | F | 2 | IMTUF 100m 2021 (Finisher) | ||
| 108036 | Garro | Constance | F | NE | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 110255 | Garstecki | Jeffrey | M | NC | US | 1 | Hellgate 100k 2020 (17 hours) |
| 103450 | Garten | Luke | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 107565 | Garver | Andrew | M | OHIO | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 108295 | Gary | Luke | M | California | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 103776 | Garzolini | Tony | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109743 | Gasiorowski | Andrzej | M | Hertfordshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 100494 | Gaspari | Jamie | M | NC | US | 8 | Never Summer 103k 2021 (23 hours) |
| 101099 | Gates | Jorma | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 103436 | Gates | Lee | M | CO | US | 8 | Run Rabbit Run 100m 2021 (Finisher) |
| 109033 | Gaudet | Kim | F | Québec | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 109786 | Gaudin | Jerome | M | Haute Savoie | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108530 | gaudreault | Mike | M | QC | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 110486 | Gaul | Chrissy | F | OR | US | 1 | Hellgate 100k 2019 (17 hours) |
| 102176 | Gauld | Jodie-May | F | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 108777 | Gauthier | Keith | M | FL | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 102931 | Gavigan | Shawn | M | AB | CA | 32 | Lost Soul Ultra 100k 2021 (21 hours) |
| 103110 | Gayman | Greg | M | IA | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 102386 | Gazzola | Robert | M | MN | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 108349 | Gehring | Hannes | U | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 104300 | Geiple | Zach | M | PA | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 100710 | Gelinas | Chiara | F | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 103669 | Gendre | Olivier | M | FRA | FR | 2 | Swiss Alps 100M 100m 2021 (Finisher) |
| 100233 | Geno | Manny | M | MS | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 107538 | Georgiev | Alex | M | New York | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 106819 | Gerardin | Rodrigo | M | 8 | Patagonia 100m 2021 (Finisher) | ||
| 100245 | Gereonsson | Staffan | M | SWE | SE | 4 | Täby Extreme Challenge 100 100m 2021 (Finisher) |
| 104823 | Gerhart | Colton | M | ID | US | 8 | Worlds End 100k 2021 (19 hours) |
| 102951 | Gery | Kyle | M | PA | US | 32 | Hellgate 100k 2019 (17 hours) |
| 109980 | Gesl | Paul | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102921 | Gesualdo | Lisa | F | MD | US | 2 | Yeti 100m 2020 (Finisher) |
| 100330 | Gezela | Mariusz | M | POL | PL | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102978 | Ghazi | Begered | F | CA | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 100381 | Ghidiu | Katie | F | NY | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 103354 | Giacchetta | Rod | M | AB | CA | 2 | Black Canyon 100k 2020 (17 hours) |
| 105398 | Giao | George | M | CA | US | 16 | Bear, The 100m 2020 (Finisher) |
| 102840 | Gibbard | Benjamin | M | WA | US | 16 | Cascade Crest 100m 2021 (Finisher) |
| 108841 | Gibbs | Dustin | M | MD | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 101664 | Gibson | Michele | F | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 100095 | Giebel | Yaniha | F | MN | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 105792 | Gierula | Robert | M | POL | PL | 8 | Mozart 100 108k 2021 (22 hours) |
| 108439 | Giesser | Tobias | M | Zug | CH | 1 | Ultra Trail Vipava Valley 160k 2021 (Finisher) |
| 110247 | Gifford | James | M | Washington | US | 1 | IMTUF 100m 2021 (Finisher) |
| 103015 | Gifford | Katherine | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 102647 | Gilbert | Josh | M | VA | US | 32 | Laurel Highlands 70.5m 2020 (20 hours) |
| 110628 | Gilbert | Nathaniel | M | UT | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109478 | Gilbert | VILLIEN | M | FRANCE | FR | 1 | Trail Verbier St Bernard 111k 2021 (33 hours) |
| 110370 | Gilbertson | Eric | M | Texas | US | 1 | Bryce 100m 2021 (Finisher) |
| 108043 | Gile | Mike | M | TX | US | 1 | Never Summer 103k 2020 (23 hours) |
| 107797 | Gill | Kristi | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107720 | Gill | Rae-Anne | F | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 106233 | Gill | Sukhy | F | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 109761 | Gilley | Earlie | M | NC | US | 1 | No Business 100m 2021 (Finisher) |
| 103584 | Giordano | Gina | F | NY | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 101357 | Giordano | Greg | M | CO | US | 8 | Never Summer 103k 2021 (23 hours) |
| 102783 | Giovanola | Eric | M | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109775 | Giroud | Mathilde | F | Haut de seine | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 109712 | Glanowski | Marek | M | - | PL | 1 | Mozart 100 108k 2021 (22 hours) |
| 104384 | Glaser | Mat | M | CA | US | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107236 | Glatthor | Thorsten | M | - Auswählen - | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 109025 | Glazier | Dustin | M | Alaska | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 104442 | Glennie | Graham | M | AB | CA | 16 | Lost Soul Ultra 100k 2021 (21 hours) |
| 100397 | Glick | James | M | NC | US | 2 | Rim to River 100m 2021 (Finisher) |
| 100392 | Gnann | Abraham | M | NY | US | 2 | Bear, The 100m 2021 (Finisher) |
| 108932 | Gnapp | Tom | M | Alberta | CA | 1 | Yeti 100m 2021 (Finisher) |
| 103139 | Gnoza | Stephen | M | CO | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 105269 | Gobert | Yann | M | FRA | FR | 2 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 109861 | Goda | Matthew | M | HI | US | 1 | Zion 100m 2021 (Finisher) |
| 109838 | Godfrey | Zachary | M | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 103468 | Godsall | Luke | M | NZL | NZ | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 107488 | Goguely | Theo | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 104322 | Going | Jerry | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108599 | Golaszewski | Gwen | F | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 100261 | Gold | Alex | M | OH | US | 2 | Bear, The 100m 2020 (Finisher) |
| 100644 | Gold | Neale | F | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 107766 | Golda | Pawel | M | Malopolska | PL | 1 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 101585 | Goldberg | Kevin | M | CO | US | 32 | Bigfoot 206m 2021 (85 hours) |
| 108200 | Golden | Ian | M | NY | US | 1 | Worlds End 100k 2021 (19 hours) |
| 109755 | Golden | Shannon | F | Minnesota | US | 1 | Superior 100 100m 2021 (Finisher) |
| 100781 | Goldfield | John | M | NC | US | 2 | No Business 100m 2021 (Finisher) |
| 108452 | Goldman | Brian | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 107896 | Goldstein | Jeff | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 100669 | Golea | Cedric | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100794 | Golembeski | Tom | M | CT | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 103268 | Gomez | Janelle | F | MN | US | 8 | Bryce 100m 2020 (Finisher) |
| 104027 | Gomez | Luis | M | FL | US | 16 | Javelina Jundred 100m 2020 (Finisher) |
| 109920 | Gomis Argemi | Enrique | M | Barcelona | ES | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 109175 | Gomori | Justin | M | Oregon | US | 1 | Zion 100m 2021 (Finisher) |
| 110183 | Gong | Russell | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108195 | Gonring | Nicholas | M | MI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 106824 | Gonthier | Julien | M | 2 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) | ||
| 105874 | Gonyaw | Kristen | F | PA | US | 2 | Worlds End 100k 2021 (19 hours) |
| 110601 | Gonzalez | Cindy | F | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108713 | Gonzalez | Fran | F | Barcelona | ES | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 108954 | Gonzalez | Jose | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 110179 | Gonzalez | Lara | F | New York | US | 1 | Hennepin 100m 2021 (Finisher) |
| 101306 | Gonzalez | Lelis | M | CO | US | 8 | Mohican 100m 2020 (Finisher) |
| 101128 | Gonzalez | Milton | M | MEX | MX | 2 | Canyons, The 100k 2021 (19 hours) |
| 101279 | Gonzalez | Nick | M | CA | US | 4 | Beaverhead 100k 2021 (19 hours) |
| 101727 | Gonzalez Hijar | Francisco | M | MEX | MX | 2 | Oso Negro 100k 2020 (24 hours) |
| 108675 | González Rodríguez | Juan | M | Barcelona | US | 1 | Tor des Géants 330k 2021 (132 hours) |
| 105880 | Goodman | Harris | M | CA | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 109244 | Goodman | Liz | F | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 105281 | Goodwin | Evan | M | CA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 104755 | Goodwin | Jeni | F | IL | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109868 | Goodwin | Michael | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108287 | GORBY | KATHLEEN | F | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 104011 | Gordon | Amy | F | AZ | US | 8 | Run Rabbit Run 100m 2021 (Finisher) |
| 107854 | Gordon | Andrew | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 109094 | Gordon | Anthony | M | queensland | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101109 | Gordon | Tony | M | AB | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 104305 | Gorichanaz | Tim | M | PA | US | 32 | HOKA Bandera 100k 2020 (17 hours) |
| 109095 | Gorissen | Karen | F | Antwerp | BE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110574 | Gormsen | Mikkel Birch | M | K | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 101600 | Gorney | Chris | M | NV | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 110758 | Goscinski | Dwayne | M | Co | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109156 | Gosselin | Frederic | M | Ontario | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106826 | Gosselin | Serge | M | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) | ||
| 105832 | Gossman | Melissa | F | IN | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 107539 | Gothard | Heather | F | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101232 | Goudie | Mandi | F | BC | CA | 8 | Canadian Death Race 125k 2021 (24 hours) |
| 110226 | Gougé | Aurélie | F | Dijon | FR | 1 | Pinhoti 100m 2021 (Finisher) |
| 105105 | Gould | Jeffrey | M | CA | US | 8 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 105498 | Goulder | Richard | M | GBR | GB | 64 | Thames Path 100 100m 2020 (Finisher) |
| 103606 | Gourgas | Thomas | M | FRA | FR | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 109574 | Gourmel | Loic | M | wa | US | 1 | Bear, The 100m 2020 (Finisher) |
| 100260 | Govey | Tom | M | KY | US | 2 | Burning River 100m 2020 (Finisher) |
| 107163 | Govier | Ryan | M | western australia | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 105932 | Gowland | Jim | M | CA | US | 8 | Leona Divide 100k 2021 (16 hours) |
| 102684 | Grabow | Rachel | F | TX | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 102890 | Grabowski | Marc | M | IL | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 108855 | Gracia | Toni | F | Victoria | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 101813 | Grade | Michael | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 100941 | Grady | Kyle | M | TN | US | 32 | Run Rabbit Run 100m 2021 (Finisher) |
| 109281 | Grafnetterova | Nikola | F | TX | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 109742 | Graham | Brad | M | British Columbia | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 105166 | Graham | Gordon | M | IA | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 110492 | graham | scarlett | F | WA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 104766 | Grahn | Sky | M | UT | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 108097 | Gramza | Ashley | F | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 101576 | Granger | Charlie | M | NY | US | 2 | Worlds End 100k 2020 (19 hours) |
| 102676 | Granskog | Stefan | M | FIN | FI | 2 | Nuts Ylläs Pallas 160k 2021 (Finisher) |
| 103971 | Granstrom | Matt | M | WI | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 110061 | Grant | Graham | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 100788 | Grant | Josh | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110724 | Grant | Sophie | F | London | GB | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 110400 | Grasso | Joseph | M | New York | US | 1 | Bryce 100m 2021 (Finisher) |
| 108446 | Graves | Carrie | F | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109267 | Gray | Corey | M | VA | US | 1 | Hellgate 100k 2020 (17 hours) |
| 107382 | Gray | Jason | M | MA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 106281 | Gray | Johnathan | M | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 108999 | Gray | Joshua | M | FL | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 110170 | Gray | Stewart | M | Arkansas | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 102351 | Grazielli | Davide | M | ITA | IT | 8 | Swiss Alps 100M 100m 2021 (Finisher) |
| 104071 | Greaney | Sean | M | WA | US | 8 | Hardrock 100m 2021 (Finisher) |
| 106574 | Grebosky | Becky | F | OR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 108765 | Greco | Lianne | F | Pa | US | 1 | Yeti 100m 2021 (Finisher) |
| 110004 | Greeley | Kevin | M | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110229 | Green | Dan | M | West Virginia | US | 1 | Rim to River 100m 2021 (Finisher) |
| 104700 | Green | Jock | M | ZAF | ZA | 4 | Karkloof 100m 2020 (Finisher) |
| 100200 | Green | Travis | M | ZAF | ZA | 2 | SkyRun 100k 2020 (28 hours) |
| 100328 | Green | Will | M | TX | US | 16 | Yeti 100m 2020 (Finisher) |
| 102798 | Greene | Jeremy | M | WA | US | 1 | Western States 100m 2021 (Finisher) |
| 108433 | Greene | Jess | F | WA | US | 1 | Moab 240 238m 2021 (102 hours) |
| 100863 | Greene | Justin | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 110379 | Greenhaw | Lanier | M | AL | US | 1 | Hellgate 100k 2020 (17 hours) |
| 107978 | Greenlee | Erik | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101129 | Greenlee | Sarah | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 101028 | Greenwood | John | M | GBR | GB | 4 | Autumn 100m 2021 (Finisher) |
| 100576 | Gregg | Jeff | M | NE | US | 2 | Never Summer 103k 2020 (23 hours) |
| 100454 | Gregg | John | M | AL | US | 32 | Arkansas Traveler 100m 2021 (Finisher) |
| 109647 | Gregis | Andrea | M | Brescia | IT | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108596 | Gregorchik | John | M | PA | US | 1 | Worlds End 100k 2020 (19 hours) |
| 105916 | Gregware | Mark | M | MN | US | 1 | Western States 100m 2021 (Finisher) |
| 103369 | Grengs | Patrick | M | WA | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 102295 | Grenwelge | Terry | M | CO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 110351 | Gresock | Ashley | F | NY | US | 1 | Rim to River 100m 2021 (Finisher) |
| 105177 | Gresty | Ryan | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 107810 | Grey | Ben | M | Buckinghamshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 104150 | Greynolds | Angela | F | AZ | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 107861 | Grice | Tracy | F | GA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 108551 | Grieger | Stephen | M | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109615 | Griffenhagen | Gregg | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 110626 | Griffin | Cindy | F | GA | US | 1 | Yeti 100m 2021 (Finisher) |
| 109000 | Griffin | Tyler | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108542 | Griffith | Andrew | M | Ohio | US | 1 | Mohican 100m 2020 (Finisher) |
| 108279 | Griffith | Shaun | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 105824 | Griffiths | Matthew | M | GBR | GB | 2 | Autumn 100m 2020 (Finisher) |
| 107798 | Grigg | Justin | M | MT | US | 1 | IMTUF 100m 2021 (Finisher) |
| 103958 | Griggs | Pete | M | OH | US | 2 | Yeti 100m 2021 (Finisher) |
| 109383 | Grigoletto | Federico | M | Vicenza | IT | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 100925 | Grigsby | Brianna | F | AZ | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 103308 | Grijalva | Fernando | M | AZ | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 104499 | Grills | Mat | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 110821 | Grim | Hayden | M | Florida | US | 1 | Zion 100m 2021 (Finisher) |
| 102274 | Grimes | Paul | M | CA | US | 8 | Never Summer 103k 2021 (23 hours) |
| 107415 | Grimm | Emily | F | ME | US | 1 | Bear, The 100m 2021 (Finisher) |
| 101080 | Grimm | Mike | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110245 | Grinovich | Thomas | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 108276 | Grinspan | Jessica | F | PA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 109432 | Grisham | Catie | F | Ca | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 103435 | Groenewegen | Mike | M | WA | US | 2 | Bigfoot 206m 2021 (85 hours) |
| 108502 | Groezinger | Rene | M | Bavaria | DE | 1 | Mozart 100 108k 2021 (22 hours) |
| 110738 | GROS | Sylvain | M | RHONE | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102677 | Grossman | Dominic | M | CA | US | 16 | Hardrock 100m 2021 (Finisher) |
| 101852 | Grotenhuis | John | M | CO | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108590 | Grow | McLane | M | Virginia | US | 1 | Grindstone 100m 2021 (Finisher) |
| 100493 | Grudziak | Marianna | F | Pa | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 106831 | Grund | Matthew | M | 16 | Wasatch Front 100m 2021 (Finisher) | ||
| 105702 | Gryfe | Rob | M | ON | CA | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107207 | Gschwandtner | Wolfgang | M | Austria | AT | 1 | Mozart 100 108k 2021 (22 hours) |
| 107590 | Guadarrama | Suzanna | F | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110104 | Guardia | Felipe | M | San Jose | CR | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 103676 | Guarischi | Rosalia | F | BRA | BR | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 100726 | Guayasamin | Nicolas | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 101434 | Guchuvo | Eduar | M | COL | CO | 2 | Cuyamaca 100k 2021 (17 hours) |
| 110109 | Guenebaut | Boris | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 100298 | Guenther | Rebecca | F | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 107361 | Guerard | Simon | M | Quebec | CA | 1 | Burning River 100m 2021 (Finisher) |
| 108547 | Guerini | Luca | M | Italy | IT | 1 | Abbots Way 125k 2021 (28 hours) |
| 108641 | Guerra | Omar | M | Florida | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 104192 | Guevara | Alan | M | CA | US | 2 | Bryce 100m 2021 (Finisher) |
| 108947 | Guevara | Amy | F | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 102067 | Guibert | Cyril | M | FRA | FR | 2 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 109550 | Guillaume | Clement | M | Ca | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 103578 | Guillaume | Lamy | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101071 | Guillot | Thierry Maxime | M | FL | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 109086 | Gülümser | Emir | M | Çankaya | TR | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 107287 | Gump | Dan | M | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101258 | Gundel | Stephanie | F | WA | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 100316 | Gushiken | Robb | M | CHE | CH | 1 | Western States 100m 2021 (Finisher) |
| 108916 | Guske | Teshia | F | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 101250 | Gustafson | Chad | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 100488 | Gustafson | Jennifer | F | AZ | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 105628 | Guthrie | Forbes | M | CA | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 110350 | Guthrie | Kaitlyn Mac | F | MA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 101869 | Gutierrez | Andrew | M | CA | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 102839 | Gutierrez | Kris | M | AL | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 105348 | Guza | Peter | M | MA | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 108461 | Gylland | Lars Erik | M | Trøndelag | NO | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 109994 | Ha | Tin | M | Virginia | US | 1 | Rim to River 100m 2021 (Finisher) |
| 103182 | Ha | Tommy | M | CA | US | 4 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 103637 | Haake | Klaus | M | DEU | DE | 4 | Mozart 100 108k 2021 (22 hours) |
| 106835 | Haboeck | Sebastian | M | Austria | AT | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103715 | Hacker | Perry | M | UT | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 109562 | Hackney | JoAnna | F | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 108784 | Hadfield | Liesel | F | Colorado | US | 1 | Zion 100k 2020 (19 hours) |
| 100222 | Hadfield | Paul | M | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107224 | Hadley | Matthew | M | KS | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 110012 | Haeffele | David | M | North Carolina | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 105553 | Haen | Abram | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 100117 | Haenggi | Michel | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107487 | Haeseler | Troy | M | WA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100904 | Hagan | Jay | M | NV | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 107957 | Hagan | Marty | M | County Tyrone | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 103253 | Hagen | Bjoern | M | AZ | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 104546 | Hagen | Lindsey | F | OR | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 101951 | Hagen | Matt | M | WA | US | 64 | Indiana 100m 2021 (Finisher) |
| 109597 | Hagen | Rakel Enoksen | F | Norway | NO | 1 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 101864 | Hagenah | Matthew | M | ID | US | 16 | IMTUF 100m 2020 (Finisher) |
| 106836 | Hahn | Nathan | M | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) | ||
| 106837 | Hahn | Staci | F | WI | US | 16 | Indiana 100m 2021 (Finisher) |
| 100816 | Haight | Daniel | M | OH | US | 32 | Burning River 100m 2021 (Finisher) |
| 110069 | Haile | Cortney | F | CO | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102546 | Haislip | Kris | M | GA | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 110734 | Håkansson | Daniel | M | Helsingborg | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 107254 | Hale | James | M | Maryland | US | 1 | Grindstone 100m 2021 (Finisher) |
| 103455 | Hale | Kit | M | MN | US | 2 | Moab 240 238m 2021 (102 hours) |
| 108074 | Halecka | Milos | M | Slovakia | SK | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102357 | Hales | Greg | M | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 103116 | Haley | Neil | M | NV | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110849 | Hall | Alastair | M | London | GB | 1 | Autumn 100m 2021 (Finisher) |
| 102451 | Hall | Ashley | F | NV | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 101673 | Hall | Christopher | M | WY | US | 2 | Never Summer 103k 2021 (23 hours) |
| 103135 | Hall | Elijah | M | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 109670 | Hall | Faith | F | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108283 | Hall | Jason | M | MO | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 101582 | Hall | Kristy | F | OR | US | 2 | Waldo 100k 2021 (17 hours) |
| 105547 | Hall | Tyler | M | UT | US | 1 | Western States 100m 2021 (Finisher) |
| 108846 | Halladay | Jason | M | NM | US | 1 | Hardrock 100m 2021 (Finisher) |
| 110757 | Halliday | John | M | Victoria | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109822 | Halpenny | Amanda | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108738 | Halverson | Matt | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105857 | Ham | Mallory | M | CA | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 103525 | Hamalainen-Iho | Mira | F | FIN | FI | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100827 | Hamberlin | Deborah | F | AZ | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 100262 | Hambrock | Christian | M | ON | CA | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 101982 | Hamburg | Jennifer | F | CA | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 105034 | Hamdorff | Ryan | M | SC | US | 2 | Yeti 100m 2021 (Finisher) |
| 109410 | Hamilton | Amy | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 106840 | Hamilton | Andy | M | 2 | Run Rabbit Run 100m 2021 (Finisher) | ||
| 102941 | Hamilton | Brian | M | OR | US | 64 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107809 | Hamilton | Forrest | M | Yorkshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 108632 | Hamilton | Justin | M | Georgia | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 107152 | Hamilton | Michael | M | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 110560 | HAMILTON | PATRICK | M | Select... | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 104903 | Hamilton | Paula | F | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 107721 | Hamlin | Michael | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102493 | Hammel | Jason | M | OK | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 106210 | Hammer | Koltin | M | PA | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 100541 | Hammes | Christopher | M | CO | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 101331 | Hammett | Ron | M | NV | US | 8 | Bryce 100m 2020 (Finisher) |
| 102741 | Hamoudi | Lindsay | M | CA | US | 32 | Cascade Crest 100m 2021 (Finisher) |
| 103050 | Hampton | John | M | CA | US | 4 | Waldo 100k 2021 (17 hours) |
| 109023 | Hamrick | Philip | M | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 104885 | Han | Ilsuk | M | GBR | GB | 8 | Thames Path 100 100m 2021 (Finisher) |
| 107927 | HAN | JEONG | M | CA | US | 1 | Zion 100k 2020 (19 hours) |
| 108236 | Handel | Sean | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104066 | Handloser | Walter | M | CA | US | 16 | Yeti 100m 2020 (Finisher) |
| 108013 | Haneghan | Bryan | M | WASHINGTON | US | 1 | HURT 100m 2020 (Finisher) |
| 108780 | Haney | Brandon | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104347 | Haney | Charlie | M | TN | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 109311 | Hankins | Kara | F | MS | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109917 | Hanks | James | M | Ohio | US | 1 | Mohican 100m 2021 (Finisher) |
| 101256 | Hanlon | Siobhan | F | OR | US | 8 | Siskiyou Outback 100k 2021 (17 hours) |
| 102008 | Hann | Matthew | M | AZ | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 102405 | Hanna | Zach | M | FL | US | 16 | Pinhoti 100m 2021 (Finisher) |
| 102234 | Hanschka | Whitney | M | MA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 105144 | Hansel | Guillaume | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 104473 | Hansen | Aaron | M | MN | US | 4 | Superior 100 100m 2021 (Finisher) |
| 102845 | Hansen | Rick | M | AK | US | 16 | Run Rabbit Run 100m 2021 (Finisher) |
| 109441 | Hansez | Benoît | M | Belgium | BE | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 105206 | Hanson | Nicholas | M | MI | US | 64 | Hennepin 100m 2021 (Finisher) |
| 110249 | Hansson | Anders | M | Sweden | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 100184 | Har Paz | Amit | M | ISR | IL | 8 | Olympus Mythical Trail 100k 2021 (28 hours) |
| 103887 | Harada | Yukihiro | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 107815 | Harary | Alex | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 103493 | Harcrow | Gina | F | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 100141 | Hardesty | Jaime | F | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 101628 | Hardt | Frank | M | DEU | DE | 2 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 104973 | Hardy | Jeremy | M | CA | US | 32 | Sean O'Brien 100k 2020 (16 hours) |
| 100011 | Hardy | Jessica | F | CA | US | 4 | Long Haul 100m 2021 (Finisher) |
| 108492 | Hargreaves | Ryan | M | AZ | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 108655 | Harken | Missy | F | AR | US | 1 | Hennepin 100m 2021 (Finisher) |
| 103109 | Harlan | Scott | M | CA | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 107603 | Harm | Jason | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109552 | Harman | John | M | Gauteng | ZA | 1 | SkyRun 100k 2019 (28 hours) |
| 110656 | Harms | Michael | M | Virginia | US | 1 | Grindstone 100m 2021 (Finisher) |
| 104748 | Harner | Ben | M | IL | US | 8 | Beaverhead 100k 2020 (19 hours) |
| 109741 | Harning | David | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107643 | Harpe | Lance | M | WA | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 101540 | Harreld | Nick | M | MT | US | 2 | Bear, The 100m 2021 (Finisher) |
| 102738 | Harrell | Robert | M | AR | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104070 | Harrington | Christopher | M | CO | US | 16 | Leadville Trail 100m 2021 (Finisher) |
| 105762 | Harris | Adam | M | BC | CA | 32 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108381 | Harris | Ben | M | OH | US | 1 | Indiana 100m 2021 (Finisher) |
| 110035 | Harris | David | M | Kent | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 101284 | Harris | Gabrielle | F | CO | US | 8 | Never Summer 103k 2021 (23 hours) |
| 102353 | Harris | Kenten | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 107333 | Harris | Rick | M | FL | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 110586 | Harris | Zachary | M | QLD | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109918 | Harrison | Craig | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110208 | Harrison | Matt | M | Ca | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 109545 | Harry | Lillian | F | NV | US | 1 | Zion 100k 2021 (19 hours) |
| 102116 | Hart | Madison | F | CO | US | 2 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 109587 | Harte | Richie | M | Ireland | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 109999 | Harton | Wesley | M | UT | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102513 | Hartsfield | Gregory | M | AL | US | 4 | Pinhoti 100m 2021 (Finisher) |
| 109829 | Hartupee | Michael | M | TN | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 101731 | Hartz | Allison | F | OR | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 108252 | Hartzel | Nick | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108888 | Harvey | David | M | Alabama | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 100292 | Harvey | David | M | GBR | GB | 8 | Thames Path 100 100m 2020 (Finisher) |
| 110059 | Harvey | John | M | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107232 | Harvey | Nikki | F | AL | US | 1 | No Business 100m 2021 (Finisher) |
| 110706 | Hasecoster | Greg | M | Colorado | US | 1 | Never Summer 103k 2020 (23 hours) |
| 102793 | Hasselrot | Mikael | M | SWE | SE | 2 | Kullamannen 100m 2021 (Finisher) |
| 109571 | Hasson | John | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 104356 | Hastings | Jonathan | M | OH | US | 2 | Burning River 100m 2021 (Finisher) |
| 106845 | Hastings | Orestes Pat | M | 8 | Never Summer 103k 2020 (23 hours) | ||
| 102039 | Hatch | Brody | M | WA | US | 2 | Bear, The 100m 2021 (Finisher) |
| 108891 | Hauf | Sheena | F | MT | US | 1 | Hennepin 100m 2021 (Finisher) |
| 106846 | Haugh | Brady | M | 2 | Leadville Trail 100m 2021 (Finisher) | ||
| 100189 | Hauk | Don | M | TX | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 101810 | Hauptmann | Erik | M | HI | US | 2 | Zion 100k 2021 (19 hours) |
| 106847 | Haus | Shannon | M | Iowa | US | 2 | Never Summer 103k 2020 (23 hours) |
| 101122 | Hausken | Janet | F | MN | US | 8 | Hellgate 100k 2020 (17 hours) |
| 105090 | Hautefeuille | Laurent | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 107329 | Haven | Kimberly | F | FL | US | 1 | Grindstone 100m 2021 (Finisher) |
| 102958 | Hawbaker III | Lyman | M | NY | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 108701 | Hawk | Michelle | F | Arizona | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109911 | Hawk | Scott | M | Virginia | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 109357 | Hawker | Michael | M | UT | US | 1 | Moab 240 238m 2021 (102 hours) |
| 105488 | Hawker | Scott | M | NZL | NZ | 8 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100367 | Hawkins | Jennifer | F | GA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 105818 | Hawkins | Steve | M | AZ | US | 1 | Western States 100m 2021 (Finisher) |
| 107621 | Hawkins | Warren | M | Western cape | ZA | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 109987 | Hawley | Bradley | M | Va | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108580 | Hayden | Chris | M | Wyoming | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 106080 | Hayden | Lewis | M | MI | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 108327 | Hayden | Robert | M | FL | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 108718 | Hayes | Keith | M | Co | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109941 | Hayes | Megan | F | SC | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 106850 | Hayes | Patrick | M | 4 | Wasatch Front 100m 2021 (Finisher) | ||
| 102765 | Hayes | Simone | F | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104491 | Haynes | Jesse | M | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 104241 | Hayvice | Fiona | F | NZL | NZ | 4 | Tarawera 100M 100m 2021 (30 hours) |
| 100384 | Head | Chris | M | GA | US | 2 | Yeti 100m 2021 (Finisher) |
| 103377 | Headrick | Christopher | M | OH | US | 8 | Bear, The 100m 2021 (Finisher) |
| 105111 | Heady | Brent | M | TX | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 106070 | Heady | Cynthia | F | KY | US | 2 | No Business 100m 2021 (Finisher) |
| 110300 | Heald | Marissa | F | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 107250 | Healey | Eddy | M | East Riding of Yorkshire | GB | 1 | Waldo 100k 2021 (17 hours) |
| 110545 | Healy | Matthew | M | Western Cape | ZA | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 101207 | Hearne | Matthew | M | GBR | GB | 8 | Mozart 100 108k 2021 (22 hours) |
| 110286 | Heath | Richard | M | Wirral | GB | 1 | Autumn 100m 2021 (Finisher) |
| 108486 | Heathman | Jarryd | M | KwaZulu-Natal | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 107678 | Heckler | Christine | F | MI | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110377 | Hedälv | Elise Sangolt | F | Innlandet | NO | 1 | Kullamannen 100m 2021 (Finisher) |
| 110366 | Hedges | Jeremy | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 106424 | Hefti | Mike | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 101304 | Hein | Erich | M | GA | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 110705 | Heinänen | Saana | F | Krokelvdalen | NO | 1 | Nuts Yll√§s Pallas 105k 2021 (22 hours) |
| 110188 | Heinrich | Ron | M | WI | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 107633 | Heinz | Justin | M | Ohio | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 100464 | Heller | Justin | M | IL | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 102250 | Hellings | Tammy | F | IL | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 108581 | Helton | Nathan | M | TN | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 110616 | Hemak | Heidi | F | Pa | US | 1 | Worlds End 100k 2021 (19 hours) |
| 102827 | Hemauer | Mark | M | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 102669 | Henn | Marc | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110671 | Hennigan | Jim | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110565 | Henning | John | M | KY | US | 1 | No Business 100m 2021 (Finisher) |
| 105859 | Henricks | Peter | M | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109139 | Henriksson | Peter | M | No | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 101320 | Henry | Susan | F | OR | US | 64 | Never Summer 103k 2021 (23 hours) |
| 101718 | Henscheid | Stefan | M | DEU | DE | 2 | Istria 168k 2021 (Finisher) |
| 110406 | Hensley | Jason | M | CA | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110788 | Hensley | Sean | M | OH | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109883 | Hentsch | Torsten | M | Thüringen | DE | 1 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 105563 | Henzl | Vlad | M | NM | US | 2 | Hardrock 100m 2021 (Finisher) |
| 100242 | Hepp | Martin Alejandro | M | ARG | AR | 2 | Patagonia 100m 2021 (Finisher) |
| 109754 | Herbst | Stefan | U | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 103791 | Herdt | Ilja | M | NY | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 109312 | Hermann | Andre | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109964 | Hermann | Sabine | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101067 | Hernandez | Andres | M | PA | US | 16 | No Business 100m 2021 (Finisher) |
| 100050 | Hernandez | Froilan | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 108657 | Hernandez | Jesus | M | Ca | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 110100 | Hernandez | Manuel | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 109256 | Herndon | Oliver | M | PA | US | 1 | Burning River 100m 2021 (Finisher) |
| 107436 | Herring | Kimberly | F | VA | US | 1 | No Business 100m 2021 (Finisher) |
| 108658 | Herring | Kyle | M | Western Cape | ZA | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 102322 | Herrington | Bobby | M | NC | US | 4 | Grindstone 100m 2021 (Finisher) |
| 105370 | Herron | David | M | OR | US | 4 | Waldo 100k 2021 (17 hours) |
| 109055 | Heslop | Claire | F | ON | CA | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108248 | Hester | Dana | F | HI | US | 1 | HURT 100m 2020 (Finisher) |
| 109236 | Hetrick | Chad | M | OK | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104754 | Heward | Sam | M | GBR | GB | 2 | North Downs Way 100m 2020 (Finisher) |
| 100411 | Hewitson | Shane | M | NY | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 108382 | Hewitt | Michael | M | Colorado | US | 1 | Bighorn 100m 2021 (Finisher) |
| 103847 | Heyboer | Peter | M | MT | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 108965 | Heymann | Rebecca | F | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 110541 | Hiatt | Justin | M | ACT | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101191 | Hibbitts | Troy | M | TX | US | 2 | Mohican 100m 2021 (Finisher) |
| 107930 | Hickenlooper | Scott | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 103514 | Hickman | Clay | M | TN | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 103510 | Hickman | Nancyanne | F | TN | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 100974 | Hickok | Cheryl | F | IN | US | 2 | Yeti 100m 2021 (Finisher) |
| 108991 | Hickory | McKendree | F | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 101949 | Hicks | Gareth | M | ARE | AE | 8 | Tarawera 100K 102k 2020 (17 hours) |
| 103824 | Hielscher | Wolfgang | M | DEU | DE | 2 | Grand Raid des Pyrénées - Tour de Cirques 123k 2021 (40 hours) |
| 110215 | Higginbotham | Jeff | M | TX | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 110786 | Higgins | Andrew | M | Alabama | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 109257 | Higgins | Devin | U | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 101082 | Higgins | Joseph | M | PA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 102189 | Higgins | Laurie | F | OR | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 109756 | Higgins | Nathan | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 100560 | Higgins | Richard | M | GA | US | 2 | Bear, The 100m 2020 (Finisher) |
| 103379 | Higgins | Shaun | M | CO | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 107312 | Hilback | Daniel | M | MN | US | 1 | Bighorn 100m 2021 (Finisher) |
| 103988 | Hildreth | Brian | M | CA | US | 8 | Cuyamaca 100k 2021 (17 hours) |
| 110205 | Hill | Ashley | M | New South Wales | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103830 | Hill | Brian | M | TX | US | 64 | HOKA Bandera 100k 2021 (17 hours) |
| 107555 | Hill | Dan | M | NM | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 101742 | Hill | Garren | M | TX | US | 8 | Never Summer 103k 2021 (23 hours) |
| 102468 | Hill | Nevin | M | CA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 100236 | Hill | Nicholas | M | NY | US | 4 | Waldo 100k 2021 (17 hours) |
| 108695 | HILL | RYAN | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 102216 | Hills | Chavet | F | CO | US | 16 | Hennepin 100m 2021 (Finisher) |
| 107598 | Hilty | Blake | M | Washington | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 105872 | Hiltz | Brayden | M | AB | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108251 | HImel | Matthew | M | AL | US | 1 | No Business 100m 2021 (Finisher) |
| 109338 | Himple | Todd | M | WA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108177 | Hinely | Jill | F | South Carolina | US | 1 | Umstead 100m 2021 (Finisher) |
| 108155 | Hinse | Guillaume | M | Quebec | US | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 108878 | Hintz | Kadon | M | ND | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101322 | Hiom | Grace | F | BC | CA | 2 | Black Canyon 100k 2020 (17 hours) |
| 101103 | Hiom | Phil | M | BC | CA | 2 | Black Canyon 100k 2020 (17 hours) |
| 109497 | Hirano | Masashi | M | TEXAS | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107208 | Hirschfeld | Madeline | F | Colorado | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109037 | Hirschi | Clark | M | UT | US | 1 | Bear, The 100m 2020 (Finisher) |
| 106598 | Hitchcock | Bryan | M | AK | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110897 | Hitchcock | Curtis | M | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 104216 | Hites | Jared | M | OH | US | 2 | No Business 100m 2021 (Finisher) |
| 101246 | Hjorthaug | Asgeir | M | NOR | NO | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105733 | Hlasney | Todd | M | KS | US | 2 | Never Summer 103k 2021 (23 hours) |
| 102028 | Hobbs | Jamie | M | NY | US | 4 | Twisted Branch 100k 2021 (19 hours) |
| 101342 | Hoberg | Rick | M | CO | US | 32 | Javelina Jundred 100m 2021 (Finisher) |
| 100275 | Hoberg | Scott | M | MN | US | 64 | Bighorn 100m 2021 (Finisher) |
| 108987 | Hobson | Dylan | M | Idaho | US | 1 | Waldo 100k 2021 (17 hours) |
| 102913 | Hockett | John | M | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 110144 | Hodge | Richard | M | Michigan | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 106854 | Hodges | Michael | M | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) | ||
| 108506 | Hodgin | Wes | M | NC | US | 1 | Zion 100k 2021 (19 hours) |
| 103277 | Hodgson | Dan | M | AUS | AU | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 102153 | Hofacker | Charles | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108357 | Hofer | Brenda | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 103321 | Hoff | David | M | CO | US | 4 | Bighorn 100m 2021 (Finisher) |
| 104157 | Hoffman | Bill | M | NY | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 100562 | Hoffman | Kip | M | PA | US | 2 | Eastern States 100m 2021 (Finisher) |
| 110748 | Hoffmann | Dominic | M | Hessen | DE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109273 | Hofmann | Michael | M | VA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 109519 | Hogaboam | Romney | M | ID | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 109048 | Hogan | Braedan | M | Victoria | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107297 | Hogan | Marianne | F | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 100580 | Hogan | Mike | M | GBR | GB | 8 | South Downs Way 100m 2021 (Finisher) |
| 109191 | Hogan | Steve | M | Waterford | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 107353 | Hogg | Ashley | M | Warwickshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 108986 | Hohl | Michael | M | MD | US | 1 | Eastern States 100m 2021 (Finisher) |
| 102354 | Hohman | Rick | M | OH | US | 16 | No Business 100m 2021 (Finisher) |
| 107291 | Hoholek | Matthew | M | IN | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108955 | Holdaway | Jeffrey | M | Utah | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 105116 | Holk | James | M | OR | US | 4 | IMTUF 100m 2021 (Finisher) |
| 104958 | Holland | James | M | TN | US | 4 | IMTUF 100m 2021 (Finisher) |
| 107541 | Hollander | Jeff | M | TN | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 101000 | Holliday | David | M | OH | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 106432 | Holmes | Joshua | M | CA | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 101685 | Holmes | Mandie | F | CA | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 101998 | Holmes Jr. | Steven | M | MI | US | 1 | Western States 100m 2021 (Finisher) |
| 110361 | Holmstrup | Jens | M | Gentofte | DK | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100661 | Holt | Carl | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107242 | Holt | Jaime | F | AL | US | 1 | No Business 100m 2021 (Finisher) |
| 103938 | Holt | Matthew | M | GBR | GB | 2 | Hardwolds 2019 80m 2019 (24 hours) |
| 109758 | Holtkamp | Zac | M | KY | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 108519 | Holvik | Simen | M | NA | NO | 1 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 106649 | Homyak | Patrick | M | CA | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 102325 | Hontou | Jeremy | M | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 108961 | Hood | Greg | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108226 | Hooker | Alison | F | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 104593 | Hooker | Michael | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 103742 | Hooper | Bob | M | TN | US | 4 | Yeti 100m 2020 (Finisher) |
| 108942 | Hooper-Stanley | Kim | F | Connecticut | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110491 | Hoover | Leigh | F | GA | US | 1 | Yeti 100m 2021 (Finisher) |
| 102077 | Hoover | Sean | M | OR | US | 32 | Siskiyou Outback 100k 2021 (17 hours) |
| 103350 | Hope | Dave | M | CA | US | 32 | Canyons, The 100k 2021 (19 hours) |
| 110057 | Hopkins | Nicole | F | CO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107285 | Hopper | Dan | M | OH | US | 1 | Bighorn 100m 2021 (Finisher) |
| 102178 | Hopper | David | M | OR | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 102884 | Hopper | Orlin | M | CO | US | 128 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102478 | Horan | Pete | M | FL | US | 8 | Run Rabbit Run 100m 2021 (Finisher) |
| 103865 | Horbinski | Tripp | M | WI | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 100394 | Horn | Austin | M | AZ | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 101880 | Hornak | Rastislav | M | SVK | SK | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106557 | Hornburg | Charles | M | MI | US | 4 | Burning River 100m 2020 (Finisher) |
| 110143 | Horner | John | M | NC | US | 1 | Rim to River 100m 2021 (Finisher) |
| 103388 | Hornor | Dustin | M | KS | US | 2 | Bighorn 100m 2021 (Finisher) |
| 104457 | Horsburgh | Ewan | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103837 | Horsfall | Charmaine | F | GBR | GB | 32 | Hardwolds 2019 80m 2019 (24 hours) |
| 105462 | Horton | Dave | M | MA | US | 2 | Bryce 100m 2020 (Finisher) |
| 107940 | Horton | Mike | M | Ga | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 109928 | Horton | Nicholas | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 100333 | Horvath | Nicholas | M | TN | US | 1 | Western States 100m 2021 (Finisher) |
| 110556 | Hosking | Josiah | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108370 | Hotaling | Grant | M | Ca | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109557 | Hotnisky | Darrell | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 107317 | Houck | Sabrina | F | WA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108776 | Houger | Tim | M | CA | US | 1 | Sean O'Brien 100k 2021 (16 hours) |
| 107449 | Hough | Joshua | M | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 109801 | Hough-Snee | Nate | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 103288 | House | Russell | M | CO | US | 2 | Grindstone 100m 2021 (Finisher) |
| 103553 | Houser | Greg | M | OR | US | 64 | Cuyamaca 100k 2021 (17 hours) |
| 109744 | Houze | kelig | M | Nouvelle Aquitaine | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 106398 | Howard | Blair | M | CA | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 106325 | Howard | Darren | M | TN | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 100195 | Howard | Henry | M | IN | US | 2 | Hennepin 100m 2021 (Finisher) |
| 100478 | Howard | Jeremy | M | RI | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 101319 | Howard | Robert | M | CO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 108677 | Howarth | Rich | M | Colorado | US | 1 | Zion 100k 2021 (19 hours) |
| 108591 | Howell | Jason | M | CO | US | 1 | Moab 240 238m 2021 (102 hours) |
| 105503 | Howell | Scott | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 100668 | Howell | Shannon | F | SC | US | 1 | Western States 100m 2021 (Finisher) |
| 105074 | Howes | Jesse | M | CT | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 107689 | Howland | Philip | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 100759 | Howland | Zhanar | F | CA | US | 2 | Never Summer 103k 2021 (23 hours) |
| 100571 | Howson | Doug | M | AB | CA | 32 | Canadian Death Race 125k 2021 (24 hours) |
| 109770 | Hoyland | Richard | M | Surrey | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 104110 | Hruska | Zdenek | M | CZE | CZ | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102052 | Hsueh | Jack | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108429 | Huang | Daniel | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 110533 | Huang | Erxiong | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109059 | Huang | Helen | F | NY | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 107475 | Huang | Szu-ying | F | MI | US | 1 | Indiana 100m 2021 (Finisher) |
| 107728 | Hubbard | Mark | M | North Carolina | US | 1 | Umstead 100m 2021 (Finisher) |
| 105453 | Huber | Olga | F | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 109342 | Huchingson | Jim | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104019 | Hudalla | Justin | M | MN | US | 4 | Superior 100 100m 2021 (Finisher) |
| 110381 | Hudelson | Snowbeard | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 101513 | Hudgins | Alex | M | CA | US | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 109794 | Hudgins | James | M | TX | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 102411 | Hudson | Jill | F | WA | US | 2 | Indiana 100m 2021 (Finisher) |
| 102823 | Huffman | Brian | M | MA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 106377 | Huffman | Larry | M | VA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 105015 | Hufschmidt | Laura | F | MI | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102858 | Huget | Jeff | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 104084 | Huggins | Heather | F | CA | US | 16 | Leona Divide 100k 2021 (16 hours) |
| 108668 | Hughes | Adam | M | MI | US | 1 | Zion 100k 2021 (19 hours) |
| 108336 | Hughes | Dan | M | MI | US | 1 | Eastern States 100m 2021 (Finisher) |
| 109170 | Hughes | Ken | M | Berkshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 107394 | Hughes | Sam | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 103880 | Hughes | Stuart | M | AUS | AU | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 110265 | HUGUET | Nicolas | M | Landes | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 109490 | Huhman | Mike | M | Michigan | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 106613 | Huizenga | Ted | M | CA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 107384 | Hull | Andy | M | NC | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 110658 | Hull | Jonathon | M | AL | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 107204 | Hullermann | Tim | M | CO | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109279 | Humble | Tyson | M | Oregon | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 103432 | Humenetskyj | Alexander | M | CA | US | 16 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 102164 | Humenny | Patrick | M | BC | CA | 32 | Lost Soul Ultra 100k 2021 (21 hours) |
| 106346 | Humphrey | Sean | M | OH | US | 4 | Hellgate 100k 2019 (17 hours) |
| 101347 | Hunsucker | Matthew | M | CO | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 100732 | Hunt | Jay | M | CO | US | 2 | Hardrock 100m 2021 (Finisher) |
| 102674 | Hunt | Wesley | M | AR | US | 128 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107315 | Hunter | Jeanne | F | WI | US | 1 | Long Haul 100m 2020 (Finisher) |
| 101524 | Hunter | Jonathan | M | CA | US | 32 | Cruel Jewel 106m 2021 (Finisher) |
| 104850 | Hunter | Robert | M | OH | US | 16 | Mohican 100m 2021 (Finisher) |
| 100799 | Hunter | Steven | M | ON | CA | 8 | Black Canyon 100k 2020 (17 hours) |
| 110903 | Huntoon | Andrew | M | WI | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 109310 | Hunziker | Eric | M | OH | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 108348 | Huppé | Mathieu | M | Québec | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 107438 | Hurd | Brandon | M | California | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108876 | Huriez | Clément | M | Haute Savoie | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107231 | Hurl | Jeremy | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 108703 | Hurlbutt | Samantha | F | Pa | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108404 | hurley | dennis | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 102426 | Hurley | Ian | M | PA | US | 4 | Grindstone 100m 2021 (Finisher) |
| 107294 | Hurrell | James | M | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 103582 | Hurst | Blair | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107611 | Hurtado | Art | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100239 | Husseini | Naji | M | NC | US | 4 | Bighorn 100m 2021 (Finisher) |
| 101355 | Huston | Jacob | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 106863 | Husveth | Jason | M | 16 | Superior 100 100m 2021 (Finisher) | ||
| 110573 | Hutchens | Lauren | F | MI | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 104511 | Hutchins | Kelly | M | KY | US | 16 | Pinhoti 100m 2020 (Finisher) |
| 109115 | Hutchinson | G Brian | M | Dublin | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 103128 | Huyett | Joe | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 108699 | Hyatt | Hope | F | UT | US | 1 | Zion 100m 2021 (Finisher) |
| 105630 | Hyslop | Stuart | M | GBR | GB | 4 | Kerry Way Ultra 193k 2021 (40 hours) |
| 109104 | Iacob | Andrei-Mihai | M | Dolj | RO | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 100143 | Ickringill | David | M | ESP | ES | 16 | Autumn 100m 2021 (Finisher) |
| 107286 | Ieuter | William | M | IL | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 101773 | Ignatowski | Trisha | F | CO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 102502 | Igusa | Tom | M | NZL | NZ | 32 | Tarawera 100M 100m 2021 (30 hours) |
| 101025 | Ihara | Tomokazu | M | JPN | JP | 128 | HURT 100m 2020 (Finisher) |
| 110428 | Ilariucci | Flavio | M | Parma | IT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100224 | Iles | Aaron | M | MD | US | 2 | Bigfoot 206m 2021 (85 hours) |
| 103984 | Iles | Ben | M | WA | US | 4 | Beaverhead 100k 2020 (19 hours) |
| 108282 | Imamura | Fumiaki | M | Cambridgeshire | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 110524 | IMBRAGUGLIO | NIKO | M | LA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107872 | Imhoff | Kyle | M | VA | US | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 105220 | Inagaki | Taito | M | JPN | JP | 8 | Tarawera 100M 100m 2020 (30 hours) |
| 103273 | Inanaga | Yusuke | M | JPN | JP | 2 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 105472 | Ingham | Ryan | M | AZ | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 108056 | Inghram | James | M | Ohio | US | 1 | Mohican 100m 2020 (Finisher) |
| 108681 | Inouye | Meggie | F | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 100718 | Iosa | Jeff | M | FL | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 108365 | Irish | Jonathan | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 108314 | Irons | Thomas | M | CA | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107559 | Irr | Rob | M | PA | US | 1 | IMTUF 100m 2021 (Finisher) |
| 100608 | Irving | Stephanie | F | WA | US | 16 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 103752 | Irwin | Scott | M | TN | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 108585 | Isabel | Amie | F | Kentucky | US | 1 | Yeti 100m 2020 (Finisher) |
| 105508 | Isabella | Bennett | M | MN | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108782 | Isaksson | Johan | M | Västra Götaland | US | 1 | Kullamannen 100m 2020 (Finisher) |
| 110017 | Ismail | Gustavo | M | Buenos Aires | AR | 1 | Patagonia 100m 2021 (Finisher) |
| 103564 | Issenbeck | Cedric | M | FRA | FR | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108882 | Ithurburn | Ashlie | F | AL | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 110793 | Ivancic | Matej | M | Croatia | HR | 1 | Ultra Trail Vipava Valley 160k 2021 (Finisher) |
| 110107 | Ivanov | Pavel | M | WA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107213 | Iyer | Sundaram Kartik | M | CA | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110303 | Izor | Elizabeth | F | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 101556 | Jacka | Ted | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 108883 | Jäckel | Christoph | M | Deutschland | DE | 1 | Swiss Alps 100k 100k 2021 (22 hours) |
| 103754 | Jackson | Ben | M | CO | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 110892 | Jackson | Chris | M | Nsw | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107225 | Jackson | David | M | California | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 101544 | Jackson | Greg | M | VA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 109529 | Jackson | Leigh | F | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 108207 | Jackson | Matthew | M | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 101587 | Jackson | Steve | M | ON | CA | 4 | Black Canyon 100k 2020 (17 hours) |
| 100063 | Jackson | William | M | WI | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 104879 | Jacobs | Anthony | M | ID | US | 16 | Beaverhead 100k 2021 (19 hours) |
| 109840 | Jacobs | Henry | M | Washington | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 103741 | Jacobs | Paul | M | DC | US | 8 | Canal Corridor 100 100m 2021 (Finisher) |
| 109476 | Jacobsen | Caitlin | F | Washington | US | 1 | IMTUF 100m 2021 (Finisher) |
| 110862 | Jacobsen | Kenn | M | Rudersdal | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 107211 | Jacobson | Ryan | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 104029 | Jacobson | Sam | M | MN | US | 4 | IMTUF 100m 2021 (Finisher) |
| 110838 | Jacobsson | Erik | M | Stockholm | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 102201 | Jaegersen | Peter | M | OR | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 110140 | Jakobsen | Gritt | F | Denmark | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 100158 | Jalmin | Loic | M | FRA | FR | 8 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110042 | James | Brandon | M | TX | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 108966 | James | Carlee | F | Ga | US | 1 | Umstead 100m 2021 (Finisher) |
| 107187 | James | Elizabeth | F | Georgia | US | 1 | Zion 100k 2021 (19 hours) |
| 107218 | James | Michael | M | NC | US | 1 | Grindstone 100m 2021 (Finisher) |
| 108511 | James | Michael | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107191 | James | Ryan | M | NC | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 102249 | Janacek | Michal | M | N/A | CZ | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 110089 | Janecek | Wade | M | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107356 | Janeska | Mina | F | England | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 104163 | Jang | Hyun Suk | F | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 101489 | Janisch | Austin | M | CA | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 107473 | Jansen | Bram | M | Meath | IE | 1 | Race to the Stones 100k 2021 (17 hours) |
| 102509 | Jansen | Kevin | M | AB | CA | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104565 | Jaqua | Nate | M | OR | US | 8 | HURT 100m 2020 (Finisher) |
| 104302 | Jarvis | Wade | M | AB | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108917 | Jauch | Kelly | M | Wisconsin | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 102455 | Jay | Alyson | F | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101156 | Jay | Colleen | F | NC | US | 16 | Bear, The 100m 2021 (Finisher) |
| 107494 | Jay | Justin | M | Alaska | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 105524 | Jay | Luke | M | CO | US | 16 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108573 | Jay | Stuart | M | Berkshire | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 103862 | Jefferson | Lauren | F | VA | US | 2 | Burning River 100m 2020 (Finisher) |
| 108528 | Jeffrey | Scott | M | Ontario | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 101402 | Jenkins | Alicia | F | WA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 107292 | jenkins | scott | M | London | GB | 1 | Moab 240 238m 2021 (102 hours) |
| 103125 | Jennings | Bryan | M | NC | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 110755 | Jennings | Drew | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 108197 | Jensen | Aaron | M | Utah | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103806 | Jensen | Brian | M | NM | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 110807 | Jensen | Jeppe Sikker | M | Denmark | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 107446 | Jensen | Ken | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 109255 | Jensen | Kristian Vestergaard | M | Lejre | DK | 1 | Tor des Géants 330k 2021 (132 hours) |
| 108721 | Jensen | Shane | M | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108210 | Jensen | Tony | M | NV | US | 1 | Zion 100k 2021 (19 hours) |
| 106128 | Jerez Vidal | Miguel Angel | M | ESP | ES | 2 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 107963 | Jesson | Maree | F | Northamptonshire | GB | 1 | Hong Kong 100K 100k 2020 (23 hours) |
| 109992 | Jessop | Ricky | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110792 | Jester | Jon | M | VA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 107431 | Jia | Haiyan | M | CA | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110106 | jiang | feng | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 100599 | Jin | Ge | M | TX | US | 4 | Jiangnan 100 Ultra Trail 100m 2021 (Finisher) |
| 103520 | Jirak | Ales | M | DEU | DE | 16 | Krakonosova Stovka 100k 2021 (22 hours) |
| 107588 | Joelsson | Erik | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 105016 | Joens | Alexia | F | CA | US | 32 | Sean O'Brien 100k 2021 (16 hours) |
| 108628 | Johannes | Debora | F | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 103518 | Johannes | Sönke | M | CHE | CH | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109819 | Johannessen | Tom | M | *Ikke relevant | NO | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110709 | Johansen | Per | M | Hovedstaden | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 108642 | Johansson | Johan | M | Skåne | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 110213 | Johansson | Monica | F | Sverige | US | 1 | Kullamannen 100m 2021 (Finisher) |
| 104364 | Johns | Tony | M | WA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 108417 | Johnson | Aaron | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 107926 | Johnson | Andrew | M | Utah | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 102312 | Johnson | Aron | F | MN | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110679 | Johnson | Ashley | F | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 101257 | Johnson | Bertram | M | VT | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 106160 | Johnson | Brandon | M | MN | US | 1 | Western States 100m 2021 (Finisher) |
| 109022 | Johnson | Brett | M | AK | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 108792 | Johnson | Brian | M | GA | US | 1 | Yeti 100m 2021 (Finisher) |
| 108431 | Johnson | Bridget | F | Wellington | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 106495 | Johnson | Bryce | M | FL | US | 2 | Long Haul 100m 2020 (Finisher) |
| 110681 | Johnson | Cary | M | MN | US | 1 | IMTUF 100m 2021 (Finisher) |
| 100574 | Johnson | Clint | M | GA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 109982 | Johnson | David | M | Oregon | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107696 | Johnson | Eric | M | Arizona | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 101170 | Johnson | Erik | M | AL | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108499 | Johnson | Mark | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 100385 | Johnson | Martin | M | GBR | GB | 2 | Thames Path 100 100m 2020 (Finisher) |
| 100274 | Johnson | Matt | M | AL | US | 2 | Yeti 100m 2021 (Finisher) |
| 108112 | Johnson | Matthew | M | Georgia | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108245 | Johnson | Max | M | Massachusetts | US | 1 | Never Summer 103k 2021 (23 hours) |
| 105184 | Johnson | Neil | M | MN | US | 1 | Western States 100m 2021 (Finisher) |
| 107889 | Johnson | Ray | M | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 109508 | Johnson | Ryan | M | Maryland | US | 1 | Bighorn 100m 2021 (Finisher) |
| 102514 | Johnson | Shelby | F | CA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 107398 | Johnson | Trevor | M | Pa | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108219 | Johnson | Tyler | M | AL | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 102817 | Johnson | Warren | M | FL | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 109241 | Johnson | Zachary | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 103687 | Johnston | Christoffer | M | NJ | US | 1 | Western States 100m 2021 (Finisher) |
| 103341 | Johnstone | Chris | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 110173 | Johnstone | Shannon | F | North Carolina | US | 1 | Umstead 100m 2021 (Finisher) |
| 106101 | Jolie | Mike | M | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 107986 | Jones | Allyssa | F | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 110148 | Jones | Brian | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104094 | Jones | Chris | M | CA | US | 8 | Bear, The 100m 2021 (Finisher) |
| 101804 | Jones | Dakota | M | MT | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 108454 | Jones | Dani | F | OH | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 102814 | Jones | David | M | IN | US | 2 | Mohican 100m 2021 (Finisher) |
| 105423 | Jones | Dominic | M | GBR | GB | 4 | Thames Path 100 100m 2021 (Finisher) |
| 107664 | Jones | Elizabeth | F | South Gloucestershire | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 108796 | Jones | Eva | F | Oklahoma | US | 1 | Yeti 100m 2021 (Finisher) |
| 101182 | Jones | Iain | M | CA | US | 16 | Sean O'Brien 100k 2020 (16 hours) |
| 107193 | Jones | Jessica | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100307 | Jones | Lauren | F | GA | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 104477 | Jones | Les | M | TN | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 105484 | Jones | Lisa | F | VA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 108881 | Jones | Michael | M | VA | US | 1 | Hellgate 100k 2020 (17 hours) |
| 110186 | Jones | Michael | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108229 | Jones | Rebecca | F | TN | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 110254 | Jones | Sandy | F | Virginia | US | 1 | Yeti 100m 2020 (Finisher) |
| 102145 | Jones | Steve | M | CA | US | 2 | Zion 100m 2021 (Finisher) |
| 107374 | Jones | Will | M | Tn | US | 1 | Never Summer 103k 2020 (23 hours) |
| 101352 | Jonson | Kristoffer | M | WA | US | 2 | Leona Divide 100k 2021 (16 hours) |
| 110028 | Jónsson | Jón | M | Reykjavík | US | 1 | Kullamannen 100m 2021 (Finisher) |
| 102154 | Jordan | Ethan | M | OR | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 104475 | Jordan | Jeffrey | M | TN | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 107289 | Jordan | Jennifer | U | Florida | US | 1 | Yeti 100m 2021 (Finisher) |
| 109633 | Jordan | Josh | M | WI | US | 1 | Superior 100 100m 2021 (Finisher) |
| 109399 | Jorgensen | Will | M | Tennessee | US | 1 | Grindstone 100m 2021 (Finisher) |
| 108837 | Jorquera Mestres | Albert | M | Catalonia | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106871 | Joseph | Lauren | F | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110209 | Joshi | Piyush | M | Washington | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 104023 | Jouin | Frederick | M | QC | CA | 4 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106165 | Jourdain | Benoit | M | FRA | FR | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101446 | Journist | Dmitri | M | UT | US | 8 | Beaverhead 100k 2020 (19 hours) |
| 107531 | Joyce | Rachel | F | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108604 | Joyce | Thomas | M | Pennsylvania | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 104824 | Joyner | Rebecca | F | MI | US | 4 | Yeti 100m 2021 (Finisher) |
| 108463 | Juda | Witold | M | woj. dolnośląskie | PL | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 100213 | Judd | Nathan | M | TN | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 107939 | Jugar | Jason | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 109505 | Julisson | Gunnar | M | Reykjavik | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109122 | Jur | Art | M | TN | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 109492 | Jurasits | Michael | M | MN | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107848 | Jurcik | Juraj | M | Bratislavsky kraj | SK | 1 | Stefanik Trail 145k 2021 (32 hours) |
| 100973 | Jurynec | Mick | M | UT | US | 16 | Hardrock 100m 2021 (Finisher) |
| 108801 | Jussaume | Franck | M | Ontario | CA | 1 | Quebec Mega Trail 110k 2021 (22 hours) |
| 101684 | Kabanuck | Richard | M | FL | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 110417 | Kabra | Aashish | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 109145 | Káder | Ladislav | M | x | SK | 1 | Ponitrianska 105k 2021 (24 hours) |
| 104069 | Kadosh | Shlomo | M | ISR | IL | 4 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 101903 | Kaetzel | Anthony | M | OR | US | 8 | Waldo 100k 2021 (17 hours) |
| 103098 | Kaiser | Ryan | M | OR | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 101200 | Kaiser | Teresa | F | UT | US | 8 | Cuyamaca 100k 2021 (17 hours) |
| 104809 | Kallevik | Jakob | M | NOR | NO | 4 | Kullamannen 100m 2021 (Finisher) |
| 110391 | Kaluzynski | Michael | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101111 | Kam | Max | M | CA | US | 8 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109003 | Kambach | Brandon | M | FL | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 109141 | Kaminski | Andy | M | Stockholm | US | 1 | Kullamannen 100m 2020 (Finisher) |
| 110899 | kanashiro | derrick | M | AB | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 100964 | Kane | Andrea | F | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 110493 | Kanwischer | Derek | M | MT | US | 1 | IMTUF 100m 2020 (Finisher) |
| 106174 | Kao | Wade | M | TX | US | 1 | Western States 100m 2021 (Finisher) |
| 101687 | Kaplan | Tom | M | NY | US | 8 | Grindstone 100m 2021 (Finisher) |
| 110246 | Kappus | Ron | M | NJ | US | 1 | Long Haul 100m 2020 (Finisher) |
| 109731 | Kardis | Theodore | M | Kansas | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 106876 | Karhula | Kari | M | Finland | FI | 4 | NUTS Ylläs Pallas 160k 2020 (Finisher) |
| 103255 | Karr | Cam | F | CA | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 101061 | Kascsak | Jacob | M | PA | US | 2 | Worlds End 100k 2021 (19 hours) |
| 108409 | Kasow | Lindsay | F | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107381 | Kauffman | Mary | F | Tennessee | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 104056 | Kauri | Roni | M | WA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 107543 | Kawai | Tatsuya | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104200 | Kaysiewicz | Maciej | M | POL | PL | 4 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 106153 | Kazukawa | Junko | F | CO | US | 16 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109214 | Keane | Conor | M | Kilkenny | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 103082 | Kearns | Laura | F | AR | US | 2 | Arkansas Traveler 100m 2021 (Finisher) |
| 108296 | Kearon | Samuel | M | ACT | US | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108787 | keating | mark | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104575 | Keating | Pete | M | WA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 108046 | Keatley | David | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 104842 | Keats | Mark | M | WA | US | 4 | Waldo 100k 2021 (17 hours) |
| 102395 | Keddie | Emily | F | OR | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 100272 | Keele | Bruce | M | NJ | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 108062 | Keeling | Charles | M | FL | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110515 | Keen | Emma | F | Suffolk | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 106060 | Keene | Aaron | M | MA | US | 8 | Never Summer 103k 2021 (23 hours) |
| 107619 | Kehmeier | Jhon | M | COLORADO | US | 1 | Bighorn 100m 2021 (Finisher) |
| 102518 | Keith | Alissa | F | VA | US | 8 | Hellgate 100k 2020 (17 hours) |
| 106013 | Keith | Berton | M | TX | US | 16 | Canal Corridor 100 100m 2021 (Finisher) |
| 103064 | Keith | Eoin | M | IRL | IE | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108800 | Kelch | Ted | M | Georgia | US | 1 | Yeti 100m 2021 (Finisher) |
| 107552 | Keller | Colin | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104563 | Keller | James | M | NV | US | 4 | Castle Peak 100k 2021 (21 hours) |
| 105694 | Keller | Tyrel | M | MT | US | 2 | Bighorn 100m 2021 (Finisher) |
| 102658 | Kelley | Dan | M | MA | US | 2 | Laurel Highlands 70.5m 2021 (20 hours) |
| 106880 | Kelley | Jim | M | WI | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 103351 | Kellogg | Bruce | M | WA | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 109617 | Kelly | Michael J | M | Co. Tipperary | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 104717 | Kelly | Neil | M | NY | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 104906 | Kelly | Ryan | M | MO | US | 32 | Arkansas Traveler 100m 2021 (Finisher) |
| 106881 | Kelly | Seth | M | 16 | Burning River 100m 2021 (Finisher) | ||
| 109607 | Kelly-Daum | Michelle | F | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 104008 | Kelman | Erin | M | MD | US | 16 | Grindstone 100m 2021 (Finisher) |
| 109811 | Kelman | Kristen | F | Maryland | US | 1 | Bighorn 100m 2021 (Finisher) |
| 108957 | Kemmeren | Matthias | M | IL | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 103329 | Kendra | Victoria | F | NC | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102565 | Kenkre | Baban | M | CA | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 109172 | Kennedy | Eric | M | California | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 104168 | Kennedy | Scott | M | CA | US | 32 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110811 | Kennemer | Erik | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108371 | Kenney | Mike | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107735 | Kenney | Sean | M | NE | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107548 | Kenny | Charissa | F | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110649 | Kenny | Shane Christopher | M | Copenhagen | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 100524 | Kent | Craig | M | OH | US | 16 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 108565 | Kercher | Kristen | F | NH | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 103445 | Kerl | Bryan | M | CO | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 109332 | Kern | Jeffrey | M | MO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109760 | Kerr | Aaron | M | Northumberland | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 106092 | Kerr | Sean | M | IL | US | 16 | Arkansas Traveler 100m 2021 (Finisher) |
| 109997 | Kerrigan | Lisa | F | Oregon | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 101486 | Kerschbaum | John | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 106883 | Kershen | Michael | M | 4 | Javelina Jundred 100m 2021 (Finisher) | ||
| 108656 | Kerton | Brendon | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107921 | Keulstra | Ynze | M | Overijssel | NL | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 109854 | Keyton | Natalie | F | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 108352 | Khadka | Sworupa | F | NY | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 104706 | Kiddle | Matthew | M | GBR | GB | 8 | Lakeland 100m 2021 (Finisher) |
| 101201 | Kienle | Eric | M | FL | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 103700 | Kiernan | Sigurdur | M | ISL | IS | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 102461 | Kilar | Ken | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 102117 | Kilbury | Tyler | M | MN | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 101845 | Kilgore | Daniel | M | CA | US | 4 | Leona Divide 100k 2021 (16 hours) |
| 107577 | Kilgore | David | M | NY | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107388 | Kilgore | Jake | M | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 105659 | Kilvinger | Tracy | F | IL | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104264 | Kim | Dujin | F | WA | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 100168 | Kim | Hohyun | M | CA | US | 2 | Bryce 100m 2021 (Finisher) |
| 101247 | Kim | Joseph | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110423 | kim | keon | U | ca | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 104235 | Kim | Sunduk | F | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 107422 | Kimari | David | M | CA | US | 1 | Zion 100m 2021 (Finisher) |
| 103383 | Kimber | Evan | M | CO | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 110225 | Kimbrough | Laura | F | Georgia | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 109448 | Kincer | Rafal | M | Slaskoe | PL | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103585 | Kind | David | M | GBR | GB | 16 | South Downs Way 100m 2021 (Finisher) |
| 108339 | King | Brian | M | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 103225 | King | Emanuel | M | PA | US | 2 | Eastern States 100m 2021 (Finisher) |
| 107489 | King | Jamie | F | OR | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109830 | KING | Ryan | M | Nevada | US | 1 | Zion 100k 2021 (19 hours) |
| 105634 | Kingston | Patrick | M | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 108940 | Kinnebrew | Tyler | M | Florida | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 102437 | Kinner | Justin | M | WY | US | 1 | Western States 100m 2021 (Finisher) |
| 108773 | Kinney | Matt | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 105746 | Kinney | Rachel | F | NM | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110633 | Kinsella | Ian | M | ONT | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 109547 | Kinsella | Jason | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 100809 | Kirchhoff | Ryan | M | CO | US | 4 | Never Summer 103k 2020 (23 hours) |
| 101064 | Kirk | Jenni | F | GA | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 108066 | Kirk | Juhana | M | East Sussex | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 109047 | Kirk | Mike | M | MA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 100457 | Kirkpatrick | Jennifer | F | TX | US | 2 | HOKA Bandera 100k 2021 (17 hours) |
| 108540 | Kirkwood | Peter | M | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 110316 | Kish | William | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109269 | Kissell | Deborah | F | PA | US | 1 | Zion 100m 2021 (Finisher) |
| 109538 | Kisslo | Andrew | M | Washington | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 108771 | kisylia | suzy | F | ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110701 | Kit | Jordan | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 103153 | Kitamura | Makoto | M | NY | US | 4 | Bear, The 100m 2021 (Finisher) |
| 110065 | Kitano | Masahiro | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110751 | Kitzler | Christine | F | SC | US | 1 | Burning River 100m 2021 (Finisher) |
| 108104 | Kivi | Josh | M | Nevada | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110336 | Kjøllmoen Steien | Aasmund | M | Innlandet | NO | 1 | Salomon Rondane 100m 2021 (Finisher) |
| 110163 | Klang | Steve | M | Ca | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108106 | Klatt | Amanda | F | Utah | US | 1 | Zion 100k 2020 (19 hours) |
| 109667 | Klaustermeier | Jacob | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108316 | Klayko | Christina | F | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 107654 | Klebba | Amanda | F | Colorado | US | 1 | Never Summer 103k 2020 (23 hours) |
| 109871 | Kleberg | Greta | F | Idaho | US | 1 | IMTUF 100m 2021 (Finisher) |
| 100172 | Klein | Jeffrey | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 109676 | Klein | Michael | M | UT | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 110295 | Klein | Neil | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 105302 | Kleinke | Andrew | M | CA | US | 32 | Javelina Jundred 100m 2020 (Finisher) |
| 105494 | Kleinman | Aaron | M | CA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 104464 | Klettlinger | Mark | M | OH | US | 8 | Burning River 100m 2020 (Finisher) |
| 102735 | Kleuser | Peter | M | TN | US | 1 | Western States 100m 2021 (Finisher) |
| 100744 | Kleven | Cody | M | WI | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107783 | Kley | Mathias | M | Deutschland | DE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 109738 | Klimowicz | Brittany | U | NY | US | 1 | Mohican 100m 2021 (Finisher) |
| 107358 | Kline | Vanessa | F | NJ | US | 1 | Grindstone 100m 2021 (Finisher) |
| 101014 | Klink | Kristen | F | CA | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 109632 | Klion | Mark | M | NY | US | 1 | Zion 100m 2021 (Finisher) |
| 100027 | Kluttz | Jeremy | M | TN | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 107379 | Kmoch | Clint | M | NE | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107336 | Kmoch | Crystal | F | NE | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107990 | Knabe | Adam | M | OH | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 100062 | Knapich | Norbert | M | DEU | DE | 2 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 102392 | Knauer | Oliver | M | AZ | US | 4 | Bear, The 100m 2020 (Finisher) |
| 108531 | Knecht | Troy | M | BC | CA | 1 | Blackall 100K 100k 2021 (18 hours) |
| 100751 | Knight | Randy | M | IL | US | 4 | Kettle Moraine 100m 2021 (Finisher) |
| 109846 | Knipling | Keith | M | VA | US | 1 | Hardrock 100m 2021 (Finisher) |
| 107655 | Knoche | Michael | M | Bayern | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110259 | Knowles | Daniel | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 100845 | Knowlton | Bruce | M | OR | US | 16 | Zion 100k 2021 (19 hours) |
| 110439 | Knüsel | Leona | F | Luzern | CH | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 108964 | Knüsel | Liliane | F | Zurich | CH | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 108440 | Koback | Bradley | M | California | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108272 | koch | kristopher | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 105954 | Kochavi | Shiran | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 109798 | Kocis | Brent | M | MA | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100035 | Kodsi | Gus | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 107718 | Koehler | Andrew | M | IL | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 106071 | Koehler | Shaun | M | NC | US | 1 | Western States 100m 2021 (Finisher) |
| 100376 | Koelli | Wolfgang | M | AUT | AT | 8 | Mozart 100 108k 2021 (22 hours) |
| 110066 | Koh | Alec | M | Oregon | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109434 | Kohler | Benjamin | M | Zug | CH | 1 | Swiss Alps 100M 100m 2021 (Finisher) |
| 104505 | Kohler | John | M | KS | US | 4 | Arkansas Traveler 100m 2021 (Finisher) |
| 102360 | Kohlhund | Andreas | M | DEU | DE | 8 | Mozart 100 108k 2021 (22 hours) |
| 108851 | Koivu | Lari | M | Varsinais-Suomi | FI | 1 | Nuts Ylläs Pallas 160k 2021 (Finisher) |
| 102594 | Koivunen | Teemu | M | FIN | FI | 2 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 108233 | Kolb | Adam | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 104326 | Kolb | Rob | M | VA | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109366 | Kolber | Pierre | M | Luxembourg | LU | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 108202 | kolita | connie | F | OH | US | 1 | Indiana 100m 2021 (Finisher) |
| 100097 | Kollassa | Marina | F | DEU | DE | 2 | Transgrancanaria 125k 2020 (28 hours) |
| 107345 | Komol | Sirirath | F | Chico | TH | 1 | Quicksilver 100k 2021 (16 hours) |
| 110499 | Kongsted | Hans Christian | M | Capital region | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 102901 | Kono | Daniel | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 110190 | Kononenko | Oleksii | M | Kiyv | UA | 1 | Pinhoti 100m 2021 (Finisher) |
| 108807 | Konowitch | Sam | M | Nevada | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 110046 | Konstantinidis | Peter | M | OR | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102551 | Kontovich | Patrick | M | TN | US | 2 | Pinhoti 100m 2021 (Finisher) |
| 103446 | Konvalin | Brent | M | CA | US | 32 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 105981 | Kooiman | Andrea | F | CA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 101157 | Koomen | Jason | M | OH | US | 64 | Yeti 100m 2020 (Finisher) |
| 106891 | Koons | Kiran | F | PA | US | 4 | Grindstone 100m 2021 (Finisher) |
| 110070 | Koopmans | Carl | M | WA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108532 | Kopczynski | Bartosz | M | Uusimaa | FI | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 109319 | Koperny | Jason | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 107506 | Koppert | James | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107447 | KOPPERT | MACKENZIE | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 102856 | Koppy | Michael | M | MN | US | 32 | HOKA Bandera 100k 2020 (17 hours) |
| 104532 | Korneev | Dmitry | M | GA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 102800 | Kornhaus | Steven | M | TN | US | 2 | Laurel Highlands 70.5m 2021 (20 hours) |
| 108405 | Kosbie | Jeffrey | M | California | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 100733 | Kosek | Rebecca | F | PA | US | 2 | Worlds End 100k 2020 (19 hours) |
| 101786 | Kosova | Anna | F | CA | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 105216 | Koss | Ben | M | CA | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 109886 | Kostanic Juric | Karmen | F | Zagreb | HR | 1 | Istria 168k 2021 (Finisher) |
| 102026 | Kostka | Mike | M | MI | US | 4 | Indiana 100m 2021 (Finisher) |
| 108078 | Kotok | Sophie | F | New York | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 109944 | Kotz | Jason | M | PA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 100347 | Kough | Eric | M | VA | US | 8 | Georgia Death Race 74m 2021 (23 hours) |
| 110462 | Kovacs | Luke | M | Maryland | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 110235 | Kovaluk | Tammy | F | OR | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105957 | Kowalik | Andrzej | M | POL | PL | 16 | Stefanik Trail 145k 2021 (32 hours) |
| 110230 | Kowalski | Alex | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109606 | Krafft | Kyle | M | FL | US | 1 | Bryce 100m 2021 (Finisher) |
| 110199 | kraft | jacquelyn | F | ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107977 | Kraft | Justin | M | Co | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 101626 | Kragtorp | Wade | M | MN | US | 4 | Castle Peak 100k 2021 (21 hours) |
| 103649 | Krajcar | Zelko | M | SWE | SE | 8 | Kullamannen 100m 2021 (Finisher) |
| 106499 | Krajna | Tom | M | AL | US | 2 | Mohican 100m 2021 (Finisher) |
| 109684 | Kramar | Derek | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 103419 | Kramer | Susan | F | AZ | US | 1 | Western States 100m 2021 (Finisher) |
| 107813 | Kramolinski | Ventsislav | M | Pleven | BG | 1 | Zion 100k 2021 (19 hours) |
| 110483 | Krantz | Rita | F | OR | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102336 | Kratky | John | M | NC | US | 4 | Yeti 100m 2021 (Finisher) |
| 110047 | Kraus | Joshua | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 108393 | Kraus | Zachary | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108974 | Krause | Shawn | M | MD | US | 1 | Hellgate 100k 2020 (17 hours) |
| 108390 | Krauss | Matthew | M | GA | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 105455 | Kravetz | Lisa | F | AZ | US | 16 | Black Canyon 100k 2021 (17 hours) |
| 108212 | Kremer | Ken | M | Pennsylvania | US | 1 | Eastern States 100m 2021 (Finisher) |
| 110782 | Krepsik | Matthew | M | IL | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110365 | Kreuzer | Ruthie | F | VA | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 105839 | Krieger | Thibaut | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108960 | Krogsrud | Shannon | F | California | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 108666 | Kroll | Barrett | M | Kansas | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 108625 | Kronfält | Lars | M | Skåne | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 102517 | Kroth | Shane | M | OR | US | 1 | Western States 100m 2021 (Finisher) |
| 108253 | Kruse | Caleb | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 108154 | Krygier | Kenny | M | Delaware | US | 1 | Eastern States 100m 2021 (Finisher) |
| 102413 | Krzysztofik | Marcin | M | GBR | GB | 16 | Kierat 100k 2021 (27 hours) |
| 107628 | Kubernat | Zachary | M | FL | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108323 | Kubiak | Edward | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 109229 | Kubont | Katie | F | Michigan | US | 1 | Superior 100 100m 2021 (Finisher) |
| 109435 | Kuchinsky | Kevin | M | PA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 102962 | Kudron | Chris | M | CO | US | 2 | Never Summer 103k 2020 (23 hours) |
| 103296 | Kuebler | Christopher | M | PA | US | 4 | Worlds End 100k 2020 (19 hours) |
| 101027 | Kuhberger | Anton | M | AUT | AT | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100716 | Kuhlmann | Erick | M | VA | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 106896 | Kuin | Sjaak | M | Noord Holland | NL | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101404 | Kujawa | Lucia | F | AB | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 102444 | Kukkonen | Jukka | M | FIN | FI | 2 | NUTS Ylläs Pallas 160k 2020 (Finisher) |
| 108350 | Kukreja | Pawan | M | Ca | US | 1 | Sean O'Brien 100k 2021 (16 hours) |
| 109594 | Kulahin | Maksym | M | Ukraine | UA | 1 | Istria 168k 2021 (Finisher) |
| 107526 | Kulkarni | pavan | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109117 | Kumar | Ganesh | M | Tamilnadu | IN | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100957 | Kumeda | Andy | M | CA | US | 64 | Zion 100m 2021 (Finisher) |
| 101654 | Kumlien | Jason | M | FL | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 110119 | Kunce | Alex | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102359 | Kundrik | Larry | M | AB | CA | 16 | Lost Soul Ultra 100k 2021 (21 hours) |
| 104048 | Kung | David | M | CA | US | 8 | Hennepin 100m 2021 (Finisher) |
| 103552 | Kunz | Ryan | M | FL | US | 16 | Bigfoot 206m 2021 (85 hours) |
| 101467 | Kuperstein | Char | F | CA | US | 32 | Tarawera 100K 102k 2020 (17 hours) |
| 108747 | Kuruzovic | Vladan | M | IL | US | 1 | Zion 100m 2021 (Finisher) |
| 100022 | Kurz | Nathan | M | DEU | DE | 32 | Cascade Crest 100m 2021 (Finisher) |
| 106198 | Kuss | Nichole | F | WI | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 102604 | Kutz | Brian | M | MN | US | 8 | Bighorn 100m 2021 (Finisher) |
| 101674 | Kuwabara | Yu | M | OR | US | 4 | Siskiyou Outback 100k 2021 (17 hours) |
| 107660 | Kuzior | Angela | F | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 102743 | Kwiatkowski | Richard | M | VA | US | 32 | Grindstone 100m 2021 (Finisher) |
| 103666 | Kyle | Dougie | M | NZL | NZ | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 107898 | Kyly | Luna | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 106538 | Kynaston | Phillip | M | GBR | GB | 2 | Thames Path 100 100m 2020 (Finisher) |
| 108992 | La | Bao | M | Wa | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 102620 | La Barreda | Vivian | F | CA | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 103497 | Laan | Katherina | F | CA | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 108652 | LaBarge | Donald | M | Michigan | US | 1 | Bryce 100m 2021 (Finisher) |
| 110851 | Labbé | Guy | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109983 | LaBonte | Griffin | M | CA | US | 1 | Never Summer 103k 2021 (23 hours) |
| 100403 | Labranche | Steven | M | CT | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 108579 | Labrie | Mathieu | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108650 | Lacasse | Jean-Pierre | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109604 | Lacey | Laura | F | Oregon | US | 1 | Waldo 100k 2021 (17 hours) |
| 103292 | Lacey | Megan | F | WA | US | 64 | Waldo 100k 2021 (17 hours) |
| 110806 | Lacoursiere | Francois | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106605 | Ladner | Justin | M | PA | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 110465 | Ladouceur | Laurent | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 110036 | Lafferty | James | M | Virginia | US | 1 | Yeti 100m 2021 (Finisher) |
| 101516 | Laflamme | Jonathan | M | AZ | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 109140 | Lafontaine | Jeremi | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109318 | Lafrance | Patrick | M | Quebec | CA | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 106316 | Lafreniere | Audree | F | BC | CA | 2 | Quebec Mega Trail 100m 2021 (Finisher) |
| 107518 | LaFreniere | Jordan | M | MI | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 108654 | Lagacé | Mathew | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 108159 | Lagerstrom | Elise | F | OR | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110912 | Lagstrom | John | M | Habo | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 108150 | Lahille | Thomas | M | -- Sélectionner votre état -- | GB | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103168 | Lai | John | M | TX | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 105620 | Laidlaw | Dylan | M | CA | US | 8 | Castle Peak 100k 2021 (21 hours) |
| 103773 | Laird | Robert | M | AL | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109276 | Lajevec | Jernej | M | Slovenia | SI | 1 | Ultra Trail Vipava Valley 106k 2021 (25 hours) |
| 101812 | Lake | Rodney | M | CA | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 105487 | Laker | Josh | M | KY | US | 4 | Georgia Death Race 74m 2020 (23 hours) |
| 110747 | Lakhani | Adil | M | Illinois | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 107830 | Lakhram | Ryan | M | Alberta | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 102091 | Lalus | Robert | M | WA | US | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107887 | Lam | MyPhuong | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103284 | Lam | Otto | M | NJ | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109528 | Lamarche | Maxime | M | Qc | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 106016 | Lambert | Bree | F | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 102041 | Lambert | James | M | MO | US | 16 | Javelina Jundred 100m 2020 (Finisher) |
| 104796 | Lambert | Mathieu | M | CHE | CH | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110153 | lambert | sydney | F | tx | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108756 | LaMora | Jeff | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 109591 | Lampert | Jeff | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107980 | Lampman | Gary | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 107885 | Lamprou | Georgios | M | Ioanninon | GR | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100199 | Lancaster | Robert | M | CA | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 101107 | Landauer | Jeff | M | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 102108 | Landresse | Christian | M | LUX | LU | 4 | Grand Raid des Pyrénées - Tour de Cirques 123k 2021 (40 hours) |
| 109904 | Landrum | Ian | M | MO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107341 | Landrum | Jeff | M | Ohio | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110526 | Landry | Danny | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 102584 | Landvatter | Joshua | M | UT | US | 16 | Wasatch Front 100m 2021 (Finisher) |
| 103673 | Lane | Greg | M | NC | US | 2 | Umstead 100m 2021 (Finisher) |
| 108453 | LANE | Keith | M | DUBLIN | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 109768 | Lane | Leslie | F | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 100269 | Lane | Yuri | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 108121 | Lang | Bret | M | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107724 | Lang | Russell | M | Texas | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 110529 | Langelier | Felix | M | QC | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 107685 | Langheine | Grayce | F | PA | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 110097 | Langhorst | Justin | M | TX | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102687 | Langton | Barrett | M | CO | US | 32 | Bighorn 100m 2021 (Finisher) |
| 109515 | Lanthier | Raymond | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 103996 | Lantz | David | M | PA | US | 16 | Eastern States 100m 2021 (Finisher) |
| 107741 | Lanz | Susan | F | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110600 | Lapachin | Larry | M | Michigan | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 110460 | Laporte | Charles-Olivier | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 110826 | Laqua | Nick | M | NA | HK | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 109576 | Lara | Elizabeth | F | Wisconsin | US | 1 | Hennepin 100m 2021 (Finisher) |
| 105110 | Laramore | Andrew | M | TN | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 107665 | Larick | Steven | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 103575 | Larochette De Roeck | Francois | M | FRA | FR | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101338 | Larrivee | Mathieu | M | QC | CA | 8 | Quebec Mega Trail 100m 2021 (Finisher) |
| 101593 | Larsen | Tim | M | CA | US | 16 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 103410 | Larson | Alexander | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110302 | Larson | Andrea | F | WISCONSIN | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103895 | Larson | Dana | F | WA | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 101740 | Larson | Ryan | M | CO | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 110648 | Larson | Steve | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108227 | Larson | Tracy | F | Colorado | US | 1 | Zion 100k 2021 (19 hours) |
| 101537 | Lasa | Ignacio | M | PAN | PA | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 102121 | Lasater | Chad | M | TX | US | 8 | Burning River 100m 2021 (Finisher) |
| 109295 | Lasky | Joshua | M | DC | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 109998 | Lassen | Christopher | M | Oh | US | 1 | Rim to River 100m 2021 (Finisher) |
| 107540 | Latosuo | Eeva | F | AK | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 102635 | Latourette | Dave | M | WA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 100556 | Laughton | Nicholas | M | AZ | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 106068 | Laurence | Doug | M | MI | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 109353 | Laurent | Le gonidec | M | Bretagne | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 109286 | Laurin | Joffrey | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 102870 | Lautzenheiser | Kevin | M | OH | US | 4 | Burning River 100m 2020 (Finisher) |
| 109580 | LAVOIE | CHRISTIAN | M | Colorado | US | 1 | Zion 100k 2021 (19 hours) |
| 101922 | Lavoie | Jean-Paul | M | OR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 106902 | Lavuri | Fabrizio | M | 8 | Abbots Way 125k 2021 (28 hours) | ||
| 108906 | Law | Bob | M | NJ | US | 1 | Burning River 100m 2020 (Finisher) |
| 104381 | Law | Graham | M | GBR | GB | 4 | Thames Path 100 100m 2020 (Finisher) |
| 104617 | Law | Todd | M | CA | US | 64 | Castle Peak 100k 2021 (21 hours) |
| 109044 | Law | Wai | M | NY | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 110687 | Lawrence | Malia | F | Colorado | US | 1 | Bear, The 100m 2021 (Finisher) |
| 104821 | Lawrence | Robert | M | MI | US | 4 | Superior 100 100m 2021 (Finisher) |
| 100603 | Lawrie | John | M | AUS | AU | 16 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102114 | Lay | Christopher | M | MA | US | 4 | Twisted Branch 100k 2021 (19 hours) |
| 105052 | Layfield | Dominick | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 110396 | Laza | Filip | M | Slovakia | SK | 1 | Stefanik Trail 145k 2021 (32 hours) |
| 109627 | Lazorko | Robert | M | AB | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 100020 | Lazzerini | Alberto | M | ITA | IT | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106621 | Le | Huy | F | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103235 | Le Pagne | David | M | CA | US | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103740 | Le Pera | Giuseppe | M | NH | US | 4 | Twisted Branch 100k 2021 (19 hours) |
| 101394 | Leach | Fred | M | CA | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 103477 | Leach | Nick | M | BC | CA | 2 | Cascade Crest 100m 2021 (Finisher) |
| 100554 | Leal | Michael | M | NC | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 104800 | Lebeau | Francis | M | QC | CA | 2 | Quebec Mega Trail 110k 2021 (22 hours) |
| 104857 | Lebeau | Jean-Philippe | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 101231 | Leblanc | Dane | M | MA | US | 32 | Grindstone 100m 2021 (Finisher) |
| 108144 | Lee | Andre | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107582 | Lee | Anjye | F | Ca | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 101368 | Lee | Anthony | M | CO | US | 8 | IMTUF 100m 2021 (Finisher) |
| 106904 | Lee | Craig | M | 2 | Indiana 100m 2021 (Finisher) | ||
| 109132 | Lee | Dan | M | MD | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 101455 | Lee | David | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 105140 | Lee | Jae Hoon | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 106365 | Lee | Johnathan | M | DC | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 110689 | Lee | Jong Geun | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 100787 | Lee | Natalie | F | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 108411 | Lee | Nathaniel | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105700 | Lee | Scott | M | VA | US | 1 | Western States 100m 2021 (Finisher) |
| 105103 | Lee | Sean | M | CA | US | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107891 | Lee | Seung Yun | M | California | US | 1 | Zion 100k 2021 (19 hours) |
| 107979 | Lee | vivian | F | California | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107999 | Leech | David | M | Berkshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 110876 | LEEDY | ALAN | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109442 | Leeflang | Arie | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 100919 | Leeke | David | M | CA | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110169 | LeFebvre | Andre | M | Alberta | CA | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109151 | Lefrancois Couturier | Suzanne | F | France | FR | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 101506 | Lefriec | Andy | M | WA | US | 16 | Beaverhead 100k 2021 (19 hours) |
| 106549 | Legrand | Marc | M | FRA | FR | 2 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 109924 | Lehman | Sean | M | California | US | 1 | Zion 100k 2020 (19 hours) |
| 104234 | Lehmann | John | M | PA | US | 64 | Superior 100 100m 2021 (Finisher) |
| 109635 | Lehmann | Susann | F | Bavaria | DE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 108938 | Lehtomaa | Martin | M | Southern Finland | FI | 1 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 108893 | Leich | Kersten | M | Deutschland | DE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103087 | Leigh | Lindsay | F | PA | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 103977 | Leis | Kate | F | MN | US | 1 | Western States 100m 2021 (Finisher) |
| 107327 | Leisen | Joshua | M | Michigan | US | 1 | Indiana 100m 2021 (Finisher) |
| 108421 | Leisey | Lacy | F | Pa | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108775 | Leistico | Mark | M | CO | US | 1 | Zion 100m 2021 (Finisher) |
| 100677 | Lemelin | Louis-Vincent | M | QC | CA | 2 | Quebec Mega Trail 110k 2021 (22 hours) |
| 109855 | Lemieux | Patrick | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 100693 | Lenahan | David | M | MN | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 103767 | Lenard | Jeffrey | M | IL | US | 128 | Cruel Jewel 106m 2021 (Finisher) |
| 108562 | Lendick | Mathieu | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108518 | lenihan | kevin | M | Co. Cork | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 100723 | Lenington | Chris | M | ID | US | 4 | IMTUF 100m 2020 (Finisher) |
| 104696 | Lennon | James | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109487 | Lenoir | Thierry | M | Haute Savoie | FR | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105557 | Lenz | Dan | M | NC | US | 32 | Umstead 100m 2021 (Finisher) |
| 107586 | Leonard | Doug | M | OR | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 100886 | Leonard | Heather | F | OR | US | 16 | Black Canyon 100k 2021 (17 hours) |
| 110250 | Leonard | Scott | M | OR | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107595 | Leonidou | Viktor Olov | M | Nicosia | CY | 1 | Olympus Mythical Trail 100k 2021 (28 hours) |
| 107237 | Leonov | Max | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 110691 | Lepetich | Clint | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105132 | Lepikhina | Marina | F | CO | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 108646 | Lepisto | Jenna | F | Wisconsin | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 110620 | Leppälä | Mika | M | Finland | FI | 1 | NUTS Ylläs Pallas 160k 2020 (Finisher) |
| 103803 | Leppard | Chris | M | NOR | NO | 2 | Soria Moria til Verden Ende 100m 2020 (Finisher) |
| 110206 | LeRoy | Michael | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109499 | leslie | clark | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 100326 | Lesniak | John | M | IL | US | 4 | Indiana 100m 2021 (Finisher) |
| 110710 | Leth-Sonne | Martin | M | Denmark | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 103505 | Leung | Solomon | M | CA | US | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109513 | Levasseur | Keith | M | MD | US | 1 | Hellgate 100k 2020 (17 hours) |
| 100159 | Levavi | Etan | M | NY | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 109135 | LÉVÊQUE | Vincent | M | Doubs | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 106907 | Levesque | Roger | M | 8 | IMTUF 100m 2021 (Finisher) | ||
| 110452 | Levesque | William | M | New York | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 109939 | Levitan | Nik | M | PA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107789 | Lewis | Austin | M | CA | US | 1 | Zion 100k 2020 (19 hours) |
| 109237 | Lewis | Avery | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108850 | Lewis | Erin | F | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 107421 | Lewis | Harvey | M | Ohio | US | 1 | Long Haul 100m 2021 (Finisher) |
| 107578 | Lewis | Ken | M | CA | US | 1 | Long Haul 100m 2021 (Finisher) |
| 100773 | Lewis | Loren | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110736 | Lewis | Matthew | M | wa | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103737 | Lewis | Montgomery | M | CA | US | 16 | Bear, The 100m 2021 (Finisher) |
| 109718 | Lewis | Nate | M | WA | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 102982 | Lewis | Nick | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 108578 | Lewis | Sara | F | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 108215 | Lewis | Shelby | M | Arkansas | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 104295 | Lewis | Tim | M | VA | US | 4 | Burning River 100m 2021 (Finisher) |
| 108329 | Lewis-Tremblay | Brandon | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107644 | Leyva | Marco | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 104924 | Li | Terence | M | NY | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 107882 | Lichtinger | Corbin | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 102781 | Lidberg | Russell | M | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 110138 | Lidster | Clint | M | QLD | AU | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 102402 | Liebowitz | Carissa | F | GA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 105179 | Liechty | Steve | M | MT | US | 8 | Wasatch Front 100m 2021 (Finisher) |
| 110127 | Liewen | Alison | F | CA | US | 1 | IMTUF 100m 2021 (Finisher) |
| 101166 | Ligsay | Edd | M | CA | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 102102 | Liles | Travis | M | OR | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 110132 | Liliequist | Johan | M | Kalmar | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 104594 | Lilly | Liam | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104980 | Lilly | Miles | M | OR | US | 4 | Hardrock 100m 2021 (Finisher) |
| 107424 | Lim | Arnold | M | Wisconsin | US | 1 | Hennepin 100m 2021 (Finisher) |
| 100997 | Lim | Soo Jung | F | CA | US | 2 | Sean O'Brien 100k 2021 (16 hours) |
| 108021 | Linan | Melissa | F | TX | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 110329 | lind | george | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108694 | Lindahl | Martin | M | Sweden | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 107856 | Lindberg | Jonathan | M | Stockholm | SE | 1 | Täby Extreme Challenge 100 100m 2021 (Finisher) |
| 109083 | Lindhe | Kristian | M | Queensland | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 107653 | Lindner | Erno | U | Tennessee | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108425 | Link | Margaret | F | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 103472 | Linscott | Michael | M | WA | US | 16 | Cascade Crest 100m 2021 (Finisher) |
| 107739 | Linskey | Prem | M | VT | US | 1 | HURT 100m 2020 (Finisher) |
| 109959 | Lipeles | Charles | M | NJ | US | 1 | No Business 100m 2021 (Finisher) |
| 102331 | Lipeles | Julia | F | NJ | US | 8 | No Business 100m 2021 (Finisher) |
| 102209 | Liss | Maiken | F | DEU | DE | 2 | Vulcano Ultra-Trail 100k 2019 (24 hours) |
| 109860 | List | Daniel | M | CA | US | 1 | HURT 100m 2020 (Finisher) |
| 104299 | Littler | Bevan | M | NZL | NZ | 8 | Tarawera 100M 100m 2021 (30 hours) |
| 106323 | Litwin | Will | M | FL | US | 8 | Yeti 100m 2021 (Finisher) |
| 102903 | Liu | Zheng | M | CA | US | 32 | Cruel Jewel 106m 2021 (Finisher) |
| 104297 | Livingston | Debbie | F | CT | US | 8 | Bighorn 100m 2021 (Finisher) |
| 109494 | Livingston | Mark | M | AZ | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 105486 | Livingstone | Matthew | M | PA | US | 2 | Worlds End 100k 2021 (19 hours) |
| 102753 | Lizama | Rodrigo | M | ARG | AR | 4 | Patagonia 100m 2021 (Finisher) |
| 106625 | Loane | Kim | M | AUS | AU | 2 | Tarawera 100M 100m 2020 (30 hours) |
| 110084 | Locandro | Ron | M | CT | US | 1 | Grindstone 100m 2021 (Finisher) |
| 104801 | Locatelli | Alessandro | M | Vicenza | IT | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107623 | Lock | Timothy | M | ME | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 104208 | Locke | Joshua | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108410 | Locke | Tim | M | New South Wales | AU | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 109899 | Lockhart | Samuel | M | County Down | GB | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 108119 | Lockwood | Richard | M | Washington | US | 1 | IMTUF 100m 2020 (Finisher) |
| 110641 | Loder | Daniel | M | CA | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101202 | Loesch | Gordon | M | PA | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 108612 | Löfström | Roger | M | N/A | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 102940 | Loftus | John | M | CA | US | 64 | Black Canyon 100k 2020 (17 hours) |
| 103516 | Logan | Todd | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 100525 | Logins | Guntars | M | LVA | LV | 2 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 108847 | Logsdon | Benjamin | M | WA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101376 | Logsdon | Cory | M | NE | US | 4 | HURT 100m 2020 (Finisher) |
| 110168 | Lohn | Erika | F | MN | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 101327 | Lokey | Dave | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 102013 | Lombardi | Vincent | M | FL | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 107827 | Loncar | Travis | M | MD | US | 1 | Yeti 100m 2021 (Finisher) |
| 108250 | Long | David | M | Montana | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 103017 | Long | Kimani | M | NC | US | 16 | Indiana 100m 2021 (Finisher) |
| 108322 | Longhurst | Glen | M | Tennessee | US | 1 | Indiana 100m 2021 (Finisher) |
| 108494 | Longworth | Gerard | M | England | GB | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 107786 | Loomis | Adam | M | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 110579 | Lopes | Thomas | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107853 | Lopez | Arturo | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 101060 | Lopez | Javier | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 101081 | Lopez | Tyler | F | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 106383 | Lopez | Vincent | M | CA | US | 4 | Sean O'Brien 100k 2021 (16 hours) |
| 102954 | Lopez Toledano | Victor | M | ESP | ES | 16 | Penyagolosa 115k 2021 (26 hours) |
| 107808 | Lorin | Aurelien | M | QC | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 109153 | Lortie | Chad | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 102036 | Lott | Brandon | M | WA | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 107576 | Louis-Ferdinand | Robert | M | MI | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105287 | Lounsbery | Anthony | M | OK | US | 32 | Bryce 100m 2021 (Finisher) |
| 110434 | Loureiro | Custodio | M | Coimbra | US | 1 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 101214 | Louttit | Gary | M | BC | CA | 8 | Stefanik Trail 145k 2021 (32 hours) |
| 110863 | Louw | Christoff | M | Western Cape | ZA | 1 | SkyRun 100k 2019 (28 hours) |
| 109812 | Lovatt | Hugh | M | London | GB | 1 | Penyagolosa 115k 2021 (26 hours) |
| 108968 | Love | John | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103183 | Loveall | Justin | M | AZ | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 105936 | Lovera | Pierluigi | M | ITA | IT | 8 | Tuscany Crossing 103k 2021 (21 hours) |
| 110114 | Low | Emmanuel | M | Bangkok | US | 1 | The North Face Thailand 100k 2020 (17 hours) |
| 101988 | Lowe | Gregory | M | MA | US | 32 | Javelina Jundred 100m 2021 (Finisher) |
| 108828 | Lowry | Rob | M | Washington | US | 1 | Yeti 100m 2021 (Finisher) |
| 100553 | Loyd | Jason | M | TN | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 103052 | Lucarelli | Elizabeth | F | NC | US | 16 | Yeti 100m 2020 (Finisher) |
| 106433 | Lucas | Chris | M | NZL | NZ | 2 | Tarawera 100M 100m 2020 (30 hours) |
| 102335 | Lucas | Eric | M | NZL | NZ | 4 | Tarawera 100M 100m 2020 (30 hours) |
| 101085 | Lucas-Lucas | Adam | M | GBR | GB | 4 | Autumn 100m 2020 (Finisher) |
| 105331 | Luckett | Carolyn | F | UT | US | 1 | Western States 100m 2021 (Finisher) |
| 101158 | Ludlow | Brock | M | OR | US | 8 | Georgia Death Race 74m 2020 (23 hours) |
| 100080 | Ludwig | Simon | M | CHE | CH | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 102188 | Luers | Rich | M | IL | US | 2 | Hennepin 100m 2021 (Finisher) |
| 104061 | Luevano | Raul | M | SC | US | 2 | Burning River 100m 2020 (Finisher) |
| 108034 | Luevano | Rhonda | F | SC | US | 1 | Yeti 100m 2021 (Finisher) |
| 109082 | Lui | Sonny | M | IL | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108061 | Lukenovich | Michael | M | New York | US | 1 | Eastern States 100m 2021 (Finisher) |
| 101100 | Luna | Gabe | M | CA | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 106918 | Lund | Soeren | M | 16 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) | ||
| 104332 | Lundgren | Zac | M | MN | US | 32 | Beaverhead 100k 2021 (19 hours) |
| 104549 | Lundy | Jonathan | M | KY | US | 1 | Western States 100m 2021 (Finisher) |
| 102989 | Lundy | Kristin | F | VT | US | 64 | Javelina Jundred 100m 2021 (Finisher) |
| 102600 | Lunger | Matthew | M | CO | US | 2 | Bear, The 100m 2020 (Finisher) |
| 104542 | Luo | Canhua | M | CHN | CN | 2 | Ultimate Tsaigu Trail 110k 2020 (30 hours) |
| 102297 | Luschin | Ian | M | OH | US | 8 | Hellgate 100k 2020 (17 hours) |
| 109818 | Lussier | Dominic | M | Quebec | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 110887 | Lusty | Matt | M | QLD | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 105731 | Luther | Bob | M | WV | US | 16 | Hellgate 100k 2020 (17 hours) |
| 106214 | Luther | Joey | M | CO | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 109702 | Lutz | Reece | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 105496 | Lutz | Steve | M | IA | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 108575 | Luu | Tin | M | VA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103302 | Lyle | Chris | M | AR | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 104538 | Lynch | Amanda | F | OK | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 109453 | Lynch | Doug | M | Kentucky | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 106921 | Lynch | Gregory | M | 4 | Rio Del Lago 100m 2021 (Finisher) | ||
| 107274 | Lynch | James | M | KY | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 106922 | Lyndon | Tim | M | NSW | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104984 | Lyons | Jeremy | M | MD | US | 16 | Grindstone 100m 2021 (Finisher) |
| 100283 | Lyons | Lucus | M | NC | US | 128 | Beaverhead 100k 2021 (19 hours) |
| 109053 | m andersen | steven | M | NM | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108368 | Ma | Chian | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108206 | MA | JIN | M | ON | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106525 | Maas | John | M | MN | US | 8 | Georgia Death Race 74m 2021 (23 hours) |
| 107765 | Maas | Katherine | F | ZH | CH | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 108362 | Maaske | Shannon | F | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110595 | Macaluso | Jim | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 102679 | Macbean | Edgar | M | CA | US | 8 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109613 | MacDermott | Helen | F | VA | US | 1 | Yeti 100m 2020 (Finisher) |
| 100446 | Macdiarmid | Campbell | M | NZL | NZ | 2 | Olympus Mythical Trail 100k 2020 (28 hours) |
| 107836 | Macdonald | Adrian | M | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109136 | Macdonald | Chad | M | New Hampshire | US | 1 | Grindstone 100m 2021 (Finisher) |
| 110662 | Macdonald | Jim | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 104394 | Macdonald | Kelly | F | NY | US | 8 | Hellgate 100k 2019 (17 hours) |
| 109138 | macdonald | steve | M | tx | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 101211 | Macgibbon | Andrew | M | NH | US | 2 | Bear, The 100m 2021 (Finisher) |
| 104146 | Macintire | Amy | F | TN | US | 2 | Hellgate 100k 2020 (17 hours) |
| 106924 | Macisaac | Tim | M | 4 | Castle Peak 100k 2021 (21 hours) | ||
| 107857 | Macken | Rodney | M | Cork | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 110274 | MacKenzie | Mike | M | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108186 | Mackey | David | M | OH | US | 1 | Mohican 100m 2021 (Finisher) |
| 104636 | Mackey | Monte | M | CA | US | 32 | Cuyamaca 100k 2021 (17 hours) |
| 109933 | MacLean | Carl | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104891 | MacMahon | Caolan | F | CO | US | 32 | Tunnel Hill 100m 2019 (Finisher) |
| 103927 | Macnulty | Charles | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 110279 | Madden | Anne-Marie | F | BC | CA | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 107944 | Maddock | Michael | M | VA | US | 1 | Umstead 100m 2021 (Finisher) |
| 109586 | Madeira | Luis | M | Lisboa | PT | 1 | Tor des Géants 330k 2021 (132 hours) |
| 107188 | Madlener | Patrick | M | New Mexico | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108976 | Magagna | Michelle | F | MI | US | 1 | Western States 100m 2021 (Finisher) |
| 107585 | Magley | Lisa | F | Ca | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107976 | Maguire | Luke | F | buckinghamshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 109792 | Maguire | Matt | M | Western Australia | AU | 1 | Blackall 100K 100k 2020 (18 hours) |
| 100362 | Maher | Ryan | M | MO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 102821 | Mahn | Morgan | M | MO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 101911 | Maier | Jenny | F | WA | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 108040 | Main | Barry | M | PA | US | 1 | Burning River 100m 2021 (Finisher) |
| 102587 | Mais | Jason | M | VA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 100552 | Maisel | Andrew | M | DC | US | 2 | Grindstone 100m 2021 (Finisher) |
| 107271 | Maisel | Paul | U | UT | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108126 | Maize | Ryan | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 110506 | Majors | Mark | M | FL | US | 1 | Indiana 100m 2021 (Finisher) |
| 105072 | Makovsky | Eric | M | CA | US | 4 | Bighorn 100m 2021 (Finisher) |
| 109485 | Maksymczuk | Barry | M | West Midlands | GB | 1 | Autumn 100m 2020 (Finisher) |
| 108705 | Malcolm | Luke | M | BC | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 107824 | Maldonado | EJ | M | Nevada | US | 1 | Western States 100m 2021 (Finisher) |
| 109934 | Malec | Ryan | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 103839 | Maleedy | Christian | M | GBR | GB | 64 | Autumn 100m 2020 (Finisher) |
| 108921 | malgarini | matteo | M | Aosta | IT | 1 | Tor des Géants 330k 2021 (132 hours) |
| 101595 | Malherbe | Martin | M | ZAF | ZA | 2 | Karkloof 100m 2021 (Finisher) |
| 109820 | Malina | Mike | M | WA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110038 | Malkowski | Eric | M | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108998 | Malley | Seth | M | Wyoming | US | 1 | Bighorn 100m 2021 (Finisher) |
| 105118 | Malmstrom | Christian | M | SWE | SE | 2 | Kullamannen 100m 2021 (Finisher) |
| 102829 | Mamrak | Nicholas | M | NY | US | 2 | Mohican 100m 2021 (Finisher) |
| 110551 | Manach | Erwan | M | Indre et loire | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 108158 | Manahan | Craig | M | WA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 103817 | Manaster | Andrew | M | CA | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 107338 | Mancino | Abraham | M | Ohio | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 108894 | Mandarakas | Jose | M | Panama | PA | 1 | Mohican 100m 2021 (Finisher) |
| 107350 | Mandel | David | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 103572 | Mangan | Tom | M | PA | US | 2 | Burning River 100m 2020 (Finisher) |
| 106382 | Manganello | Michael | M | CO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 103358 | Mangold | Zandy | M | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 109850 | Mangum | Brent | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 103534 | Mankus | Michael | M | DEU | DE | 16 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 108829 | Mann | Kayja | F | Colorado | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 110621 | Mannhard | Jacquie | F | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 109271 | Manning | Jake | M | OR | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 108574 | Manon | Bourduge | F | Paris | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 110360 | MANOS | GEORGIOS | M | GREECE | GR | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110812 | Mansbridge | Stuart | M | ON | CA | 1 | Lakeland 100m 2021 (Finisher) |
| 108918 | Mansfield | Steve | M | Surrey | GB | 1 | Autumn 100m 2021 (Finisher) |
| 102859 | Mansky | Brian | M | WI | US | 4 | Bryce 100m 2021 (Finisher) |
| 110718 | Mantion | Paul | M | France | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 108714 | Maraglia | Drew | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110511 | Maravilla | Jorge | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108331 | Marble | Jeremy | M | OR | US | 1 | Bear, The 100m 2020 (Finisher) |
| 102791 | Marcelino | Cristiano | M | BRA | BR | 4 | Burning River 100m 2021 (Finisher) |
| 108678 | Marchini | Ed | M | California | US | 1 | Western States 100m 2021 (Finisher) |
| 105263 | Marcil | Simon | M | QC | CA | 2 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 110722 | Marcos Segura | Diego | U | CA | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101193 | Marek | Desiree | F | OR | US | 8 | Run Rabbit Run 100m 2021 (Finisher) |
| 104925 | Maremanda | Sudheer | M | WA | US | 1 | Western States 100m 2021 (Finisher) |
| 102157 | Margolis | Amy | F | OR | US | 2 | Never Summer 103k 2020 (23 hours) |
| 102449 | Marinaccio | Joe | M | NY | US | 2 | Moab 240 238m 2021 (102 hours) |
| 102019 | Marinas | James | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 105327 | Marino | Matt | M | WA | US | 32 | Siskiyou Outback 100k 2021 (17 hours) |
| 108380 | Marion | Stacey | F | WA | US | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109041 | Marion | Zachary | M | UT | US | 1 | Tarawera 100M 100m 2020 (30 hours) |
| 108424 | Marjola | Jukka | M | Valitse maakunta tai alue | FI | 1 | Nuts Ylläs Pallas 160k 2021 (Finisher) |
| 108533 | Mark | Cox | M | Leicestershire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 110032 | Markiewicz | Agnieszka | F | mazowieckie | PL | 1 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 102035 | Markovic | Miha | M | SVN | SI | 8 | Mozart 100 108k 2021 (22 hours) |
| 101240 | Marmorato | Alessandro | M | GBR | GB | 4 | South Downs Way 100m 2021 (Finisher) |
| 110686 | maroccia | pietro angelo | M | Piemonte | IT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110532 | Marois | Martine | F | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 106925 | Marrs | Cara | F | Colorado | US | 4 | Never Summer 103k 2021 (23 hours) |
| 110024 | Marsh | Donald | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109533 | Marsh | Justin | M | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107922 | Marshall | Damien | M | Berkshire | GB | 1 | Autumn 100m 2020 (Finisher) |
| 104279 | Marshall | Gregory | M | IN | US | 2 | Hennepin 100m 2021 (Finisher) |
| 105186 | Marshall | Kristin | F | CO | US | 2 | Bryce 100m 2021 (Finisher) |
| 104631 | Marshall | Simon | M | ARE | AE | 4 | Tuscany Crossing 103k 2021 (21 hours) |
| 105622 | Marshburn | Brian | M | NC | US | 4 | Hennepin 100m 2021 (Finisher) |
| 110695 | Marson | Joe | M | California | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106926 | Martelli | Steve | M | 16 | Canyons, The 100k 2021 (19 hours) | ||
| 105126 | Marti | Nathan | M | MN | US | 32 | Tunnel Hill 100m 2019 (Finisher) |
| 104498 | Martin | Brook | F | AUS | AU | 16 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 100984 | Martin | Daniel | M | OK | US | 4 | Never Summer 103k 2020 (23 hours) |
| 101230 | Martin | Frédéric | M | CHE | CH | 4 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 108856 | Martin | Hallie | F | Iowa | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 104459 | Martin | Hamish | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109299 | Martin | Jason | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 106927 | Martin | Katey | F | 4 | Never Summer 103k 2020 (23 hours) | ||
| 105293 | Martin | Leonard | M | TN | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 100511 | Martin | Nellie | F | OK | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 102993 | Martin | Nicholas | M | CA | US | 4 | Siskiyou Outback 100k 2021 (17 hours) |
| 100485 | Martin | Nick | M | CO | US | 8 | Never Summer 103k 2020 (23 hours) |
| 108902 | Martin | Ryan | M | Colorado | US | 1 | Hardrock 100m 2021 (Finisher) |
| 110804 | Martin | Sebastien | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 103551 | Martin Escribano | Maximo | M | ESP | ES | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104185 | Martin-Consani | Debbie | F | GBR | GB | 16 | Autumn 100m 2021 (Finisher) |
| 108779 | Martin-Morris | Kyle | M | WA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105335 | Martines | Alessandra | F | AUS | AU | 4 | Tarawera 100M 100m 2020 (30 hours) |
| 100779 | Martinez | Jadd | M | CA | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 108603 | Martinez | Leopoldo | M | Tx | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108300 | Martinez | Michael | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 103234 | Martinez | Michael | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 109363 | Martini | Vittorio | M | PG | US | 1 | Abbots Way 125k 2021 (28 hours) |
| 109620 | Marton | Kucsera | M | Budapest | HU | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 107307 | MAS | Loic | M | 91170 | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105976 | Mascarin | Shane | M | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 109671 | Mason | Madeline | F | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 110339 | Massetti | Melina | F | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104098 | Massey | Alex | M | AUS | AU | 8 | Siskiyou Outback 100k 2021 (17 hours) |
| 102891 | Massey | Jessica | F | MI | US | 2 | Long Haul 100m 2021 (Finisher) |
| 101816 | Massey | Stephen | M | NV | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 109148 | Massey | Travis | M | CO | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107249 | Massey | Wyatt | M | TN | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 102641 | Massie | Tammy | F | MD | US | 2 | Long Haul 100m 2020 (Finisher) |
| 101702 | Massler | Jacob | M | CA | US | 2 | IMTUF 100m 2021 (Finisher) |
| 108662 | Mastin | Marvin | M | MO | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 100058 | Mastrodemos | Nick | M | CA | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 109645 | Mastrotto | Roberto | M | VI | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110743 | Masuku | Mgcini | M | Waikato | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 105313 | Mata | Matthew | M | FL | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 107313 | Matchuny | Jacob | M | KY | US | 1 | No Business 100m 2021 (Finisher) |
| 109971 | Matecki | Laurie | F | NC | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109898 | Mateu Tena | Elias | M | Valencia | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107302 | Mathe | Josh | M | CA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 105131 | Mathers | Dale | M | IRL | IE | 4 | Kerry Way Ultra 193k 2021 (40 hours) |
| 110446 | Mathews | Brandon | M | Minnesota | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110864 | Mathieson | Danny | M | Virginia | US | 1 | Grindstone 100m 2021 (Finisher) |
| 107311 | Mathis | John | M | FL | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 105538 | Mathre | Clay | M | CO | US | 2 | Never Summer 103k 2021 (23 hours) |
| 101744 | Matjas | Luke | M | CA | US | 16 | Sean O'Brien 100k 2020 (16 hours) |
| 110159 | Matoesian | Stephen | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 109436 | Matsumoto | Kazuteru | M | JPN | JP | 1 | Pong Yaeng Trail 119k 2019 (27 hours) |
| 107740 | Matsuoka | Shogo | M | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 102957 | Matteo | Vincent | M | AZ | US | 1 | Western States 100m 2021 (Finisher) |
| 106400 | Mattern | Travis | M | CO | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 103144 | Matthews | Clifford | M | NM | US | 32 | Hardrock 100m 2021 (Finisher) |
| 105248 | Matthews | Nj | M | TN | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 100441 | Mattison | Harry | M | MA | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 109213 | Mattrey | Alex | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109873 | Mau | Maighdlin | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108635 | Mauger | Jimmy | M | Dc | US | 1 | Grindstone 100m 2021 (Finisher) |
| 101387 | Maughan | Grant | M | AUS | AU | 4 | Bigfoot 206m 2021 (85 hours) |
| 109043 | Maver | Ron | M | South Carolina | US | 1 | Long Haul 100m 2021 (Finisher) |
| 104783 | Maxwell | Michelle | F | GBR | GB | 2 | Thames Path 100 100m 2020 (Finisher) |
| 110512 | Mayberry | Michael | M | GA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 108963 | Maycroft | Timothy | M | MI | US | 1 | Yeti 100m 2020 (Finisher) |
| 109943 | Mayer | Günther | M | Niederoesterreich | AT | 1 | Mozart 100 108k 2021 (22 hours) |
| 104959 | Maynard | John | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 109896 | Mayorga | Justin | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101041 | Mays | Jonathan | M | FL | US | 4 | Long Haul 100m 2020 (Finisher) |
| 109912 | Mazuc | jeremy | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107843 | Mazur | Nicholas | U | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 106545 | Mazzarini | Ivan | M | ITA | IT | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 100830 | Mazzenga | Amanda | F | WA | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 103560 | McArthur | Jamie | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104949 | McBride | Christopher | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 101769 | McBride | Kristy | F | MI | US | 4 | Georgia Death Race 74m 2021 (23 hours) |
| 108493 | McBride | Paul | M | New South Wales | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 100410 | Mccabe | Jay | M | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 103408 | McCabe | John | M | CT | US | 4 | Siskiyou Outback 100k 2021 (17 hours) |
| 108116 | McCabe | Tyler | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109307 | McCallum | Mark | M | Australian Capital Territory | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108925 | McCann | Claire | F | N/A | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 104710 | McCann | Howard | M | Qld | AU | 4 | Blackall 100K 100k 2020 (18 hours) |
| 109166 | MCCARDLE | JASON | M | UK | US | 1 | South Downs Way 100m 2021 (Finisher) |
| 100355 | McCarthy | Abby | F | NY | US | 8 | Hennepin 100m 2021 (Finisher) |
| 102601 | McCartney | Chris | M | VA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 108148 | McCartney | David | M | IN | US | 1 | No Business 100m 2021 (Finisher) |
| 107750 | McCartney | Jackie | F | Kansas | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110510 | McClaugherty | Anna | F | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107562 | McCleery | Paul | M | East Sussex | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 108708 | McClellan | James | M | Arkansas | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 109185 | McClelland | Connor | M | CA | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 108609 | McCloy | Brandon | M | TN | US | 1 | Bryce 100m 2021 (Finisher) |
| 107700 | McClure | Cat | F | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 103625 | McCollum | Newton | M | MD | US | 2 | Long Haul 100m 2021 (Finisher) |
| 102388 | McComb | Heather | F | GA | US | 2 | No Business 100m 2021 (Finisher) |
| 110767 | McComish | Charles | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108937 | McConaughy | Joseph | M | WA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 106207 | McConnell | Chris | M | MT | US | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 107591 | McConnell | Virginia | F | ID | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 100702 | McCormick | Matthew | M | MI | US | 16 | Burning River 100m 2021 (Finisher) |
| 104507 | Mccracken | John | M | IL | US | 4 | Tunnel Hill 100m 2020 (Finisher) |
| 107897 | McCue | Mark | M | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 107579 | McCullar | Bryan | M | Ar | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100923 | McDermott | Shawn | M | VA | US | 16 | Hellgate 100k 2020 (17 hours) |
| 102131 | McDermott | Tony | M | NC | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110333 | McDiarmid | Corland | M | MI | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107153 | McDonald | Adam | M | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 109274 | McDonald | Lachlan | M | SA | AU | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 102500 | McDonald | Nick | M | OH | US | 2 | No Business 100m 2021 (Finisher) |
| 108123 | McDonald | Sophie | F | North Carolina | US | 1 | Burning River 100m 2021 (Finisher) |
| 110885 | McDonnell | Richard | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 103985 | McDonough | Tim | M | NL | CA | 4 | HURT 100m 2020 (Finisher) |
| 103567 | McDowall | Andrew | M | NZL | NZ | 32 | Tarawera 100K 102k 2020 (17 hours) |
| 101276 | McDowell | Amy | F | NC | US | 2 | Yeti 100m 2021 (Finisher) |
| 106928 | McDowell | Seth | M | 2 | IMTUF 100m 2020 (Finisher) | ||
| 100203 | McEwan | Stephen | M | GBR | GB | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106517 | Mcfadden | Lisa | F | NC | US | 32 | Umstead 100m 2021 (Finisher) |
| 101075 | Mcginn | Michael | M | IA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 104777 | McGonnell | Jeff | M | NC | US | 4 | Canal Corridor 100 100m 2021 (Finisher) |
| 108616 | McGowan | Ethan | M | Nebraska | US | 1 | No Business 100m 2021 (Finisher) |
| 103704 | McGrath | Dave | M | NY | US | 2 | Eastern States 100m 2021 (Finisher) |
| 109722 | McGrath | Joseph | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110117 | McGrath | Patrick | M | Colorado | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 110116 | McGrath | Ruth | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 106929 | Mcgraw | Chris | M | Alaska | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 109393 | McHaffa | Roy | M | West Virginia | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 110364 | McHugh | Andrea | F | VA | US | 1 | Umstead 100m 2021 (Finisher) |
| 103274 | McHugh | Pete | M | VT | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 102261 | Mcintosh | Lucia | F | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 110664 | McKay | David | M | OR | US | 1 | Waldo 100k 2021 (17 hours) |
| 102030 | McKee | Abby | F | CA | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102960 | McKee | Ken | M | CA | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101677 | McKeehan | Melissa | F | CA | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 100689 | McKeen | Heidi | F | CA | US | 8 | Waldo 100k 2021 (17 hours) |
| 102981 | McKelvey | Mike | M | UT | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 103897 | McKenna | John | M | GBR | GB | 2 | North Downs Way 100m 2021 (Finisher) |
| 104741 | Mckenney | Bryan | M | TX | US | 16 | HOKA Bandera 100k 2020 (17 hours) |
| 108045 | Mckenzie | Debra | F | Florida | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108448 | Mckeogh | John | M | Ireland | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 102664 | McKillop | Andrew | M | GBR | GB | 4 | Thames Path 100 100m 2021 (Finisher) |
| 100929 | Mcknight | Michael | M | UT | US | 2 | Moab 240 238m 2021 (102 hours) |
| 102285 | McKune | John | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 103642 | Mclamb | Justin | M | NC | US | 32 | No Business 100m 2021 (Finisher) |
| 104265 | McLaren | Bruce | M | GBR | GB | 2 | Autumn 100m 2020 (Finisher) |
| 108162 | mclaughlan | joanne | F | QLD | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 108566 | McLaughlin | Jeff | M | Wa | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 101393 | McLaughlin | Mitchell | M | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 107601 | McLaughlin | Stuart | M | Bucks | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 103908 | Mclean | Cory | M | TX | US | 16 | Hennepin 100m 2021 (Finisher) |
| 104692 | McLean | Deon | M | AUS | AU | 4 | Tarawera 100M 100m 2020 (30 hours) |
| 109439 | McMahon | Sarah | F | CA | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 109719 | McMeans | Keri | U | WY | US | 1 | Bear, The 100m 2021 (Finisher) |
| 103476 | Mcmillan | Eric | M | TX | US | 2 | Arkansas Traveler 100m 2021 (Finisher) |
| 108977 | McMillan | Justin | M | CA | US | 1 | Hardrock 100m 2021 (Finisher) |
| 105756 | McMonagle | Mike | M | UT | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 101692 | McNair | Lisa | F | AZ | US | 2 | Umstead 100m 2021 (Finisher) |
| 107949 | McNally | Paula | F | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 107821 | McNamee | Clay | M | California | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 106255 | McNary | Ross | M | KY | US | 2 | Never Summer 103k 2020 (23 hours) |
| 110523 | McNaughton | Alexandra | F | VIC | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 103106 | McNaughton | Marie | F | NZL | NZ | 2 | Hong Kong 100K 100k 2020 (23 hours) |
| 110495 | McNeil | Greg | M | Auckland | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 104794 | Mcnerney | Thomas | M | PA | US | 8 | Hellgate 100k 2020 (17 hours) |
| 106934 | Mcpeak | Nicki | M | Co. Derry | IE | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109452 | McPherson | Alison | F | Alberta | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 106152 | Mcpherson | Jeff | M | NV | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 110780 | McRae | Sally | F | California | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 108301 | McWhirt | Cathy | F | Virginia | US | 1 | Yeti 100m 2021 (Finisher) |
| 108789 | McWhorter | David | M | NC | US | 1 | Yeti 100m 2020 (Finisher) |
| 101168 | McWhorter | Travis | M | NM | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 109730 | McWilliams | Kevin | M | ID | US | 1 | IMTUF 100m 2021 (Finisher) |
| 104178 | McWilliams | Mason | M | TN | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 102928 | Meadows | Jesse | M | VA | US | 2 | Hellgate 100k 2020 (17 hours) |
| 106423 | Meadows | Troy | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 109396 | Meckel | Eric | M | Colorado | US | 1 | Never Summer 103k 2020 (23 hours) |
| 106191 | Meconis | Todd | M | GA | US | 8 | Worlds End 100k 2020 (19 hours) |
| 109967 | Medeiros | Michael | M | Ct | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104935 | Meding | Trevor | M | TX | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 103426 | Medley | Brian | M | CA | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 103746 | Meehan | Sean | M | CT | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 102421 | Meek | Jo | F | GBR | GB | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110267 | Meena | Lokesh | M | Rajasthan | IN | 1 | Penyagolosa 115k 2021 (26 hours) |
| 110263 | Meier | Kevin | M | KwaZulu-Natal | ZA | 1 | SkyRun 100k 2020 (28 hours) |
| 108168 | Meier | Reto | M | CT | US | 1 | Yeti 100m 2021 (Finisher) |
| 105369 | Meier | Wes | M | MN | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 110064 | Meiklejohn | Stuart | M | Wellington | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 100122 | Meinke | Markus | M | DEU | DE | 2 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 101116 | Meisch | Disco | F | NY | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 109277 | Meisel | Fabian | M | Thurgau | CH | 1 | Swiss Alps 100M 100m 2021 (Finisher) |
| 107349 | Mejia | Danny | M | ME | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108928 | Mekareeya | Noppadol | M | Lombardia | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 108651 | Meland-Tangen | Hakon | M | OSLO | NO | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 106406 | Melchiors | Mike | M | AZ | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 100301 | Melia | Brian | M | GBR | GB | 16 | Tor des Géants 330k 2021 (132 hours) |
| 109887 | MENCHERO | PEDRO PABLO | M | MADRID | ES | 1 | Penyagolosa 115k 2021 (26 hours) |
| 107708 | Mendez | Richard | M | Az | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107148 | MENDOZA | FERNANDO | M | LA LIBERTAD | SV | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109863 | Mendoza | Rolando | M | Ca | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 110550 | MENSONIDES | ANNETTE | F | CA | US | 1 | Hennepin 100m 2021 (Finisher) |
| 102128 | Mercer | James | M | MO | US | 16 | Burning River 100m 2021 (Finisher) |
| 103833 | Meredith | Joel | M | TN | US | 4 | Hardrock 100m 2021 (Finisher) |
| 104496 | Merrell | Jeff | M | CA | US | 8 | Rim to River 100m 2021 (Finisher) |
| 104404 | Merrick | Jeffrey | M | CA | US | 2 | Zion 100k 2020 (19 hours) |
| 104186 | Merrin | Zach | M | OH | US | 4 | Tunnel Hill 100m 2020 (Finisher) |
| 110125 | Merritt | Greg | M | ME | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102387 | Merry | Adam | M | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 103485 | Meskell | Patrick | M | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 109554 | Messenger | Patrick | M | Kentucky | US | 1 | No Business 100m 2021 (Finisher) |
| 104508 | Messina | Andrew | M | NJ | US | 8 | Zion 100m 2021 (Finisher) |
| 101310 | Messman | Clark | M | CA | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 108752 | Metz | Kevin | M | Washington | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 100914 | Meyer | Angela | F | GA | US | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106455 | Meyer | Austin | M | CA | US | 4 | Castle Peak 100k 2021 (21 hours) |
| 108594 | Meyer | Jamie | M | FL | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 107876 | Meyer | Melissa | F | Il | US | 1 | Hennepin 100m 2021 (Finisher) |
| 109335 | meyer | steve | M | PA | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101315 | Meyer | Thomas | M | WA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 102265 | Meyer-Jacob | Carsten | M | ON | CA | 2 | Quebec Mega Trail 100m 2021 (Finisher) |
| 105986 | Meza | Sergio Anibal | M | MEX | MX | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 104662 | Mezincescu | Alice | F | GBR | GB | 2 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 108983 | Miao | David | M | NY | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 105819 | Michalak | Slawomir | M | POL | PL | 8 | Ponitrianska 105k 2020 (24 hours) |
| 104311 | Michaud | Michael | M | WA | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 104965 | Michaudet | Martin | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108489 | Michelle | Michelle | F | NSW | US | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 103739 | Mickey | Daniel | M | NJ | US | 4 | Eastern States 100m 2021 (Finisher) |
| 100514 | Midkiff | Shane | M | VA | US | 2 | Hellgate 100k 2020 (17 hours) |
| 103768 | Midlock | Jason | M | IL | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 106940 | Mihalik | Norbert | M | Northamptonshire | GB | 4 | North Downs Way 100m 2021 (Finisher) |
| 107600 | Mika | Shad | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 109223 | Miklas | John | M | OH | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 110797 | Milander | Jessica | F | ID | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 100413 | Milde | Matt | M | CO | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 107829 | Miley | Blake | M | Ar | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 107636 | Millbery | Spencer | M | London | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 102300 | Miller | Alison | F | TX | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 109208 | Miller | Bailee | F | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 101709 | Miller | Brandon | M | AB | CA | 8 | Lost Soul Ultra 100k 2021 (21 hours) |
| 104627 | Miller | Brian | M | CA | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 104424 | Miller | Christopher | M | VA | US | 8 | Hellgate 100k 2020 (17 hours) |
| 103751 | Miller | David | M | WA | US | 4 | Hardrock 100m 2021 (Finisher) |
| 103397 | Miller | Drew | M | NY | US | 16 | Burning River 100m 2021 (Finisher) |
| 106421 | Miller | Jeff | M | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 102208 | Miller | Jeffrey | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 110227 | Miller | Jesse | M | NE | US | 1 | Bear, The 100m 2021 (Finisher) |
| 101033 | Miller | Joe | M | CO | US | 2 | Never Summer 103k 2020 (23 hours) |
| 102723 | Miller | Jordan | M | CA | US | 4 | Bighorn 100m 2021 (Finisher) |
| 107667 | Miller | Katrina | F | Montana | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109341 | Miller | Katy | F | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 108549 | Miller | Keith | M | Wiltshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 108636 | Miller | Marty | M | Utah | US | 1 | Bear, The 100m 2020 (Finisher) |
| 107517 | Miller | Matt | U | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 101902 | Miller | Nartaya | F | CA | US | 16 | Cuyamaca 100k 2021 (17 hours) |
| 108315 | Miller | Richard | M | Nevada | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108290 | Miller | Ryan | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107879 | Miller | Sarah | F | Mississippi | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 108328 | Miller | Terry | M | CO | US | 1 | Hardrock 100m 2021 (Finisher) |
| 103303 | Miller | Thomas | M | NC | US | 8 | Burning River 100m 2021 (Finisher) |
| 106941 | Miller | Tim | M | 32 | Indiana 100m 2021 (Finisher) | ||
| 101896 | Miller | Zachary | M | NH | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 109675 | Mills | Nicholas | M | OR | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109752 | Mills | Paige | F | NH | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 110197 | Milner | Gina | F | CA | US | 1 | Waldo 100k 2021 (17 hours) |
| 104370 | Milton | Bill | M | AR | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108546 | MInkema | John | M | Ca | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 101399 | Minkovich | Kirill | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 105721 | Mires | Jeff | M | IN | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 104148 | Mishler | Sam | M | NC | US | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 105266 | Mitchell | Cal | M | ON | CA | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108869 | Mitchell | Christopher | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 105923 | Mitchell | Clark | M | PA | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 108042 | Mitchell | Dustin | M | KY | US | 1 | Burning River 100m 2021 (Finisher) |
| 100458 | Mitchell | Jeff | M | GBR | GB | 2 | Autumn 100m 2021 (Finisher) |
| 110630 | Mitchell | Karl | M | Cork | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 108727 | Mitchell | Michael | M | Minnesota | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109065 | Mitchell | Robert | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 107570 | Mitchell | Rosemary | F | Mashonaland | ZW | 1 | Karkloof 100m 2021 (Finisher) |
| 107762 | Mitchell | Victoria | F | TN | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 104184 | Mitchum | Benji | M | AL | US | 2 | Yeti 100m 2021 (Finisher) |
| 108299 | Mitsukova | Victoria | F | New York | US | 1 | Zion 100k 2021 (19 hours) |
| 110843 | Mlynarczyk | Jakub | M | Wielkopolska | PL | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104047 | Mo | Yu-Yen | M | CA | US | 32 | Wasatch Front 100m 2021 (Finisher) |
| 101894 | Mocko | Veronika | F | NM | US | 8 | Zion 100k 2021 (19 hours) |
| 101879 | Moctezuma | Ilian | F | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109736 | Modin | Olof | M | Stockholm | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 105329 | Moe | Eric | M | CA | US | 8 | Cuyamaca 100k 2021 (17 hours) |
| 101316 | Moffitt | Julia | F | IA | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 106021 | Mogavero | Jeff | M | MT | US | 8 | Beaverhead 100k 2021 (19 hours) |
| 110332 | Mohr | Bob | M | OH | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 108907 | Mohr | Chase | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 105642 | Mohr | Stephen | M | VA | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 107171 | Moldenhauer | Nathan | M | WI | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103319 | Molfino | Emilee | F | CA | US | 2 | Zion 100m 2021 (Finisher) |
| 102688 | Molina | Pascal | M | CHE | CH | 2 | Trail Verbier St Bernard 111k 2021 (33 hours) |
| 105711 | Molloy | John | M | NZL | NZ | 2 | Tarawera 100M 100m 2021 (30 hours) |
| 100101 | Molloy | Michael | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104894 | Molnar | Chrystal | F | PA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 100407 | Moloney | Daniel | M | GBR | GB | 4 | North Downs Way 100m 2021 (Finisher) |
| 110795 | Monaco | Rachel | F | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 104888 | Moncada | Jordi | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 101018 | Monem | Mansour | M | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 100851 | Monesmith | Josh | M | IN | US | 2 | Indiana 100m 2021 (Finisher) |
| 108922 | Monette | Nicole | F | MI | US | 1 | Yeti 100m 2020 (Finisher) |
| 110688 | Monge | Lauren | F | New Jersey | US | 1 | Rim to River 100m 2021 (Finisher) |
| 107549 | Monical | Nicki | F | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 107727 | Monk | Jessica | F | WI | US | 1 | Superior 100 100m 2021 (Finisher) |
| 102294 | Monllor | Javier | M | Oxfordshire | GB | 2 | Race to the Stones 100k 2021 (17 hours) |
| 107400 | Monsey | James | M | Suffolk | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 104927 | Monsivais | Samuel | M | UT | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 104294 | Montano | Bryce | M | NM | US | 4 | Bryce 100m 2020 (Finisher) |
| 101015 | Montgomery | Robert | M | WA | US | 8 | Castle Peak 100k 2021 (21 hours) |
| 109467 | Montoya | Joey | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 102240 | Moody | Alondra | F | TN | US | 4 | Hellgate 100k 2020 (17 hours) |
| 100792 | Moody | Nathan | M | NM | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 107458 | Moore | Andrea | F | TX | US | 1 | Indiana 100m 2021 (Finisher) |
| 108903 | Moore | Andrew | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 100548 | Moore | Andrew | M | MI | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 108065 | Moore | Angela | F | LA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 105300 | Moore | Benjamin | M | MT | US | 2 | IMTUF 100m 2021 (Finisher) |
| 108500 | Moore | Doug | M | East Coast | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 100449 | Moore | Jake | M | NC | US | 4 | Never Summer 103k 2021 (23 hours) |
| 110844 | Moore | Jason | M | Indiana | US | 1 | Indiana 100m 2021 (Finisher) |
| 100049 | Moore | Jeffrey | M | MS | US | 1 | Grindstone 100m 2021 (Finisher) |
| 110471 | Moore | Joseph | M | QLD | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 103243 | Moore | Ken | M | MN | US | 16 | HOKA Bandera 100k 2020 (17 hours) |
| 101547 | Moore | Kevin | M | CA | US | 4 | Swiss Alps 100M 100m 2021 (Finisher) |
| 103885 | Moore | Nathaniel | M | CA | US | 8 | Run Rabbit Run 100m 2021 (Finisher) |
| 110475 | Moore | Peter | M | California | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 102496 | Moore | Rob | M | GBR | GB | 8 | Lakeland 100m 2021 (Finisher) |
| 100535 | Moore | Sarah | F | MI | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 104502 | Moore | Shandra | F | TX | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 108332 | morales | julio | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 106947 | Morales | Michael | M | Oregon | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 102768 | Morales Rodriguez | Juan Carlos | M | QRO | MX | 2 | Leadville Trail 100m 2021 (Finisher) |
| 108525 | Morand | Dave | M | Quebec | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 100502 | Mordos | Elise | F | NY | US | 2 | Never Summer 103k 2021 (23 hours) |
| 102837 | Moreau | Evan | M | OR | US | 2 | IMTUF 100m 2021 (Finisher) |
| 107865 | Moreau | Louis | M | GA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109187 | moreland | precious | F | CO | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105881 | Moreno | Christopher | M | NV | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 109362 | Moreno | Gerardo | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100034 | Morgan | Gareth | M | ZAF | ZA | 2 | Karkloof 100m 2021 (Finisher) |
| 108716 | Morgan | Ian | M | Barcelona | ES | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 109672 | Morgan | Jeff | M | AL | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 105085 | Morgan | Kristian | M | GBR | GB | 16 | The North Face Thailand 100k 2020 (17 hours) |
| 109683 | Morgan | Laurel | F | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 110172 | Morgan | Nathan | M | Idaho | US | 1 | IMTUF 100m 2020 (Finisher) |
| 105475 | Morgan | Patrick | M | SC | US | 2 | Burning River 100m 2020 (Finisher) |
| 102396 | Morgan | Peter | M | PA | US | 16 | Cruel Jewel 106m 2021 (Finisher) |
| 100249 | Morgan | Rhydian | M | GBR | GB | 2 | Thames Path 100 100m 2020 (Finisher) |
| 108712 | Morgan | Tanner | M | Arizona | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 108545 | Morgan | Timmy | M | Pennsylvania | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 100612 | Morgenstern | Amanda | F | CO | US | 8 | Never Summer 103k 2020 (23 hours) |
| 102588 | Morin | Jean Nicolas | M | QC | CA | 4 | Quebec Mega Trail 100m 2021 (Finisher) |
| 106085 | Mork | Eric | M | CA | US | 8 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 100602 | Morneau | Steve | M | QC | CA | 4 | Tor des Géants 330k 2021 (132 hours) |
| 103199 | Moroch | Chris | M | NC | US | 2 | Hellgate 100k 2020 (17 hours) |
| 105604 | Moromisato | Mark | M | CA | US | 64 | Javelina Jundred 100m 2021 (Finisher) |
| 108244 | Morrick | Jeff | M | NE | US | 1 | Zion 100m 2021 (Finisher) |
| 107229 | Morris | Dana | M | CA | US | 1 | Bryce 100m 2021 (Finisher) |
| 102457 | Morris | Gareth | M | NZL | NZ | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 104450 | Morris | Justin | M | AL | US | 16 | Pinhoti 100m 2020 (Finisher) |
| 109972 | Morris | Morgan | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 101314 | Morris | Paul | M | AL | US | 32 | Pinhoti 100m 2021 (Finisher) |
| 108567 | Morris | Tom | M | Iowa | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108234 | Morrison | Chase | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 110341 | morrison | paul | M | ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109045 | Morrow | Alex | M | AL | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109776 | Morrow | Jacqui | F | NSW | AU | 1 | Blackall 100K 100k 2020 (18 hours) |
| 105139 | Morrow | Paul | M | OR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 110805 | Morrow-Jones | Brendan | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107332 | Mortensen | Zach | M | NC | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101001 | Mortimer | Peter | M | AZ | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 102912 | Morton-Langehaug | Jessi | F | UT | US | 2 | Bryce 100m 2020 (Finisher) |
| 102192 | Mosher | William | M | CA | US | 8 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 109240 | Moskal | Andrew | M | Virginia | US | 1 | Burning River 100m 2021 (Finisher) |
| 102834 | Mosley | Layna | F | NC | US | 32 | Laurel Highlands 70.5m 2021 (20 hours) |
| 100046 | Moss | Kyle | M | CO | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 103208 | Mossman | Dawson | M | NB | CA | 4 | Quebec Mega Trail 110k 2021 (22 hours) |
| 107769 | Motz | Emily | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107935 | Moulding | David | M | Lancashire | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 109660 | Moulton | Andrew | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109605 | Mounier | Benoît | M | FRA | FR | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108120 | Mousel | Matt | M | WI | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107385 | Mower | Amy | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101700 | Mower | Clark | M | UT | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 107778 | Mrowiec | Jakub | M | Lesser Poland | PL | 1 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 100679 | Mrowka | Joanna | F | NY | US | 2 | Worlds End 100k 2021 (19 hours) |
| 100663 | Mrowka | Marcin | M | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 104252 | Muñoz | Francisco | M | ESP | ES | 2 | Ultra Trail Sierras del Bandolero 166k 2020 (40 hours) |
| 101743 | Muehlbauer | Riva | F | WA | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 103814 | Mueller | Daniel | M | ID | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 110657 | Mueller | Drew | M | OR | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110488 | Mueller | Logan | F | Ohio | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110323 | Mueller | Marc | M | Schleswig-Holstein | DE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105138 | Mueller | Sarah | F | ID | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 104167 | Muenchow | Burkhard | M | DEU | DE | 32 | Tuscany Crossing 103k 2021 (21 hours) |
| 107482 | Mues | Christoph | M | Dubai | AE | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 108050 | Muhm | Maximilian | M | Germany | DE | 1 | Mozart 100 108k 2021 (22 hours) |
| 108719 | Muir | Alex | M | Surrey | GB | 1 | Autumn 100m 2021 (Finisher) |
| 106043 | Muirhead | Lorna | F | CHE | CH | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110618 | Mukherjee | Sandip | M | New Jersey | US | 1 | Bryce 100m 2021 (Finisher) |
| 102965 | Mukkamala | Himagiri | M | CA | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 107712 | Mulder | Rickert | M | Western Cape | ZA | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 102044 | Mulholand | Brian | M | CA | US | 16 | Bear, The 100m 2021 (Finisher) |
| 107452 | Mulinyawe | Josam | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 101031 | Muller | Grant | M | GA | US | 8 | Georgia Death Race 74m 2021 (23 hours) |
| 103952 | Müller | Markus | M | AUT | AT | 32 | Ponitrianska 105k 2021 (24 hours) |
| 109367 | Muller | Nicolas | M | Bavaria | DE | 1 | Swiss Alps 100M 100m 2021 (Finisher) |
| 109069 | Mullett | Kristen | F | TN | US | 1 | Yeti 100m 2020 (Finisher) |
| 102330 | Mullett | Sean | M | TN | US | 1 | Western States 100m 2021 (Finisher) |
| 109909 | Mulligan | Lea | F | TN | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 102516 | Mullin | Christopher | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 107389 | Mulvihill | Max | M | CA | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 100351 | Munari | Dana | M | WA | US | 4 | Bryce 100m 2021 (Finisher) |
| 110018 | Munaut | Jeremy | M | Wallonie | BE | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 108020 | Mundow | Aoife | F | Louth | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 104835 | Mundt | Karl | M | NC | US | 8 | Umstead 100m 2021 (Finisher) |
| 100160 | Munoz | Jean Francois | M | FRA | FR | 8 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110079 | Muradyan | Benjamin | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104544 | Murata | Ryo | M | JPN | JP | 2 | Tarawera 100M 100m 2020 (30 hours) |
| 104492 | Murphey | Mckinley | M | CA | US | 8 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 110326 | Murphy | Alex | M | Hampshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 100267 | Murphy | Chris | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 100611 | Murphy | Danny | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 103328 | Murphy | Jeason | M | CO | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 103566 | Murphy | Joe | M | NZL | NZ | 2 | Tarawera 100K 102k 2021 (17 hours) |
| 108033 | Murphy | Jonathan | M | MO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110342 | Murphy | Mitchell | M | NV | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110264 | Murphy | Peter | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104709 | Murphy | Zoe | F | GBR | GB | 4 | Autumn 100m 2020 (Finisher) |
| 102213 | Murray | Chris | M | OR | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 108100 | Murray | Eric | M | MD | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 108263 | Murray | Liberty | F | TN | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108258 | Murray | Thomas | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107417 | Murrel | Jack | M | MA | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 104346 | Murry | Bryce | M | NV | US | 4 | Bighorn 100m 2021 (Finisher) |
| 109774 | Muscat | Daniel | M | SA | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 106597 | Musgrave | David | M | CO | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 100323 | Music | John | M | NV | US | 8 | Bryce 100m 2021 (Finisher) |
| 110519 | Mussetter | Mitch | M | SC | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 108082 | Musy-Verdel | Thierry | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 109088 | Mutenin | Stanislav | M | Ukraine | US | 1 | Golden Ring 100K 100k 2021 (18 hours) |
| 106507 | Muursepp | Peeter | M | CT | US | 2 | Eastern States 100m 2021 (Finisher) |
| 103623 | Muzelle | Charles | M | FRA | FR | 8 | Trail Verbier St Bernard 111k 2021 (33 hours) |
| 107981 | Myers | Matthew | M | Arkansas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101505 | Myers | Robert | M | CA | US | 16 | Bear, The 100m 2020 (Finisher) |
| 109674 | Myers | Scott | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 107587 | Myre | Sara | F | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 107451 | Myres | Ann | F | Ohio | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109479 | Myrvang | Annie | F | Idaho | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108188 | Nadeau | Elizabeth | F | SC | US | 1 | Zion 100k 2021 (19 hours) |
| 109060 | Nadeau | Mike | M | GA | US | 1 | Yeti 100m 2021 (Finisher) |
| 102313 | Nagayama | Michael | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 100821 | Nagayama | Steve | M | CA | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 109988 | Nagel | John | M | ALASKA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 105121 | Nah | Joseph | M | MD | US | 8 | Grindstone 100m 2021 (Finisher) |
| 110204 | Nail | James | M | NV | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108857 | Naimushin | Aleksei | M | St. Petersburg | RU | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 108095 | NAKAMURA | TADAKATSU | M | TOKYO | US | 1 | Hong Kong 100K 100k 2020 (23 hours) |
| 108488 | Nakamura | Yukihisa | M | Kanagawa | JP | 1 | Swiss Alps 100M 100m 2021 (Finisher) |
| 104985 | Nakata | Shinya | M | CA | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 102936 | Nalven | Amy | F | NJ | US | 4 | Hellgate 100k 2020 (17 hours) |
| 104933 | Namanny | Steven | M | UT | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 100992 | Nanaszko | Michael | M | OR | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 101210 | Nash | Ronnie | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109377 | Nash | Sheila | F | Dorset | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 104416 | Nasser | Anthony | M | GA | US | 16 | Georgia Death Race 74m 2021 (23 hours) |
| 102562 | Nassi | Mark | M | CA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 104634 | Nataraju | Sunaad | M | CA | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 109697 | Nau | Sebastian | M | Styria | US | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 106957 | Naughton | Yvonne | F | 16 | IMTUF 100m 2021 (Finisher) | ||
| 107822 | Nave | Rich | M | MI | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108563 | Nazarewicz | Pawel | M | VA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 100037 | Nazier | Mogamat | M | ZAF | ZA | 2 | Karkloof 100m 2021 (Finisher) |
| 105573 | Neate | Liz | F | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 100930 | Nedland | Magnar | M | NOR | NO | 2 | No Business 100m 2021 (Finisher) |
| 109629 | Neel | Adam | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 103247 | Negherbon | Jesse | M | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 103137 | Negoro | Yuki | M | NJ | US | 32 | Bighorn 100m 2021 (Finisher) |
| 107545 | Neilan | Mark | M | NJ | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107996 | Neill | Eric | M | CA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 108063 | Neilson | James | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 102717 | Neiman | Christopher | M | CA | US | 8 | Grindstone 100m 2021 (Finisher) |
| 106144 | Neisch | Julie | F | AZ | US | 4 | Never Summer 103k 2020 (23 hours) |
| 108898 | Nel | Anton | M | Gauteng | ZA | 1 | SkyRun 100k 2019 (28 hours) |
| 110544 | Nelson | Alex | M | CO | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 106103 | Nelson | Eric | M | UT | US | 4 | Bear, The 100m 2021 (Finisher) |
| 107168 | Nelson | James | M | VA | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 108697 | Nelson | Jody | M | NC | US | 1 | Bear, The 100m 2020 (Finisher) |
| 108704 | Nelson | Sally | F | MT | US | 1 | Moab 240 238m 2021 (102 hours) |
| 104899 | Nemechek | Jeremiah | M | MO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 110386 | Nequist | Brian | M | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 109426 | Nesbitt | Elizabeth | F | VT | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 109625 | Nessi | Edgardo Martin | M | Ciudad Autónoma de Buenos Aires | AR | 1 | Patagonia 100m 2021 (Finisher) |
| 110237 | Nesteby | Håkon | M | Oslo | NO | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 107495 | Nethercott | Kade | M | UT | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109657 | Neuenschwander | Jace | M | TX | US | 16 | HOKA Bandera 100k 2021 (17 hours) |
| 109842 | Neville | Mark | M | WA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 108030 | Newberry | Adam | M | NC | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 109707 | Newey | Richard | M | Surrey | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 107441 | Newhall | Michael | M | OH | US | 1 | Hellgate 100k 2020 (17 hours) |
| 101918 | Newman | Dan | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 106661 | Newman | Greg | M | CO | US | 16 | Wasatch Front 100m 2021 (Finisher) |
| 105749 | Newport-Berra | Mchale | F | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 107344 | Newton | Jonathan | M | Georgia | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 104046 | Newton | Matt | M | WA | US | 32 | Cascade Crest 100m 2021 (Finisher) |
| 103414 | Newton | Peter | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 102527 | Ngo | Nam | M | CA | US | 2 | Javelina Jundred 100m 2020 (Finisher) |
| 104445 | Ngui | Mau Shun Joseph | M | HKG | HK | 4 | Hong Kong 100K 100k 2020 (23 hours) |
| 101177 | Nguyen | Bruce | M | CA | US | 32 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109790 | Nguyen | Nancy | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 101819 | Nguyen | Nhan | M | SC | US | 2 | Indiana 100m 2021 (Finisher) |
| 109080 | Nguyen | Patrick | M | UT | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 104141 | Nguyen | Phi | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 106177 | Nguyen | Rick | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110050 | Nguyen | Tony | M | CA | US | 1 | Burning River 100m 2020 (Finisher) |
| 109062 | Nguyen | William | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104284 | Ni Mhaoileoin | Aoife | F | GBR | GB | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 100149 | Nichols | Gary | M | CALIFORNIA | US | 16 | Burning River 100m 2021 (Finisher) |
| 110576 | Nicholson | Tom | M | Cambridgeshire | GB | 1 | Tuscany Crossing 103k 2021 (21 hours) |
| 101750 | Nickelsen | Samuel | M | CA | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 109001 | Nicklin | Matt | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 107491 | Nicknish | Paul | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 104095 | Nicolaou | Dimitrios | M | GA | US | 8 | Umstead 100m 2021 (Finisher) |
| 106958 | Nicolas | Danne | M | 2 | Quebec Mega Trail 110k 2021 (22 hours) | ||
| 108822 | Nicolaysen | Eric | M | IA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 110582 | Niebergall | Gary | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 110191 | Niebergall | Sam | M | CA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109331 | Nielsen | Paul | M | CO | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109648 | Niemeyer | Nikki | F | Ohio | US | 1 | Burning River 100m 2021 (Finisher) |
| 109314 | Nierman | Shannon | M | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 108383 | Nieves | Cruz | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 102435 | Nigh | Phillip | M | CA | US | 32 | Sean O'Brien 100k 2021 (16 hours) |
| 107596 | Ninot | Gaël | M | Hérault | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108002 | Nitchals | Kimberly | F | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 107634 | Nobert | Kacey | F | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108333 | Noble | Paul | M | Iowa | US | 1 | Zion 100m 2021 (Finisher) |
| 102101 | Nobles | John | M | OK | US | 1 | Western States 100m 2021 (Finisher) |
| 105371 | Noda | Takeshi | M | JPN | JP | 8 | HURT 100m 2020 (Finisher) |
| 108838 | Noerager | Brett | M | AL | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 110518 | Nolf | Aurelien | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104206 | Nordberg | Selina | F | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 102776 | Nordgren | Eric | M | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 109788 | Nordlöf | Tomas | M | Västerbotten | US | 1 | Kullamannen 100m 2021 (Finisher) |
| 104960 | Noren | Anders | M | SWE | SE | 4 | Moab 240 238m 2021 (102 hours) |
| 106964 | Norman | Todd | M | Colorado | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108629 | Norris | Craig | M | London | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 110285 | Northern | Kristie | F | AL | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 103347 | Norton | Howard | M | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109882 | Norton | Ryan | M | Oregon | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 102911 | Norton | Ryan | M | WI | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 106126 | Norwood | Carl | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109260 | Notari | Paul | M | Massachusetts | US | 1 | Leona Divide 100k 2021 (16 hours) |
| 104518 | Nott | Todd | M | NE | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 107846 | Nottage | Clive | M | Buckinghamshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 108794 | Novobilski | Jen | U | Alaska | US | 1 | Yeti 100m 2021 (Finisher) |
| 109784 | Nowak | Jessica | F | Indiana | US | 1 | Indiana 100m 2021 (Finisher) |
| 104275 | Ntam | Adeline | F | MD | US | 16 | Pinhoti 100m 2021 (Finisher) |
| 109198 | Nunes | Nuno | M | Porto | PT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105833 | Nunez | Emilio | M | NY | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 103845 | Nutter | Travis | M | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 104938 | Nuzzi | Pier Francesco | M | ITA | IT | 2 | Abbots Way 125k 2021 (28 hours) |
| 108831 | Nye | Melinda | F | IA | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 102160 | Nylander | Sam | M | SWE | SE | 8 | Kullamannen 100m 2021 (Finisher) |
| 105871 | Nyman | Mikael | M | SWE | SE | 2 | Täby Extreme Challenge 100 100m 2021 (Finisher) |
| 110490 | Nyquist | Nick | M | WA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 110631 | O Connor | Alan | M | Ireland | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 110561 | O Connor | Eoin | M | Limerick | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 107194 | O Neill | Conor | M | Wicklow | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 107169 | O'Berry | Collin | U | NC | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 107261 | O'Brien | Sean | M | TN | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 110157 | O'Connell | Melissa | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107212 | O'Connor | Katie | F | IL | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 110787 | O'Connor | Michael | M | GA | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 102968 | O'Donnell | Brendan | M | CA | US | 64 | Rio Del Lago 100m 2021 (Finisher) |
| 101553 | O'Donnell | Lisa | F | CA | US | 4 | Georgia Death Race 74m 2020 (23 hours) |
| 108659 | O'Donnell | Matthew | M | North Carolina | US | 1 | Yeti 100m 2020 (Finisher) |
| 103874 | O'Farrell | Jitka | F | CO | US | 8 | Beaverhead 100k 2020 (19 hours) |
| 108953 | O'Farrell | Michael | M | ON | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 107276 | O'Gorman | Christine | F | Colorado | US | 1 | Grindstone 100m 2021 (Finisher) |
| 105728 | O'Hear | Carol | F | CA | US | 8 | Burning River 100m 2021 (Finisher) |
| 109578 | O'KELLY | Mark | M | 85 | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 108369 | O'Leary | Shawn | M | Auckland | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 101543 | O'Malley | Kim | F | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 101734 | O'Neill | Ashley | F | AR | US | 8 | Mohican 100m 2021 (Finisher) |
| 109489 | O'Neill | Coleman | M | MD | US | 1 | Sean O'Brien 100k 2021 (16 hours) |
| 108985 | O'Rear | Jessica | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 104345 | O'Shea | John | M | UT | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 107235 | O'Sullivan | Paul | M | Surrey | GB | 1 | Autumn 100m 2021 (Finisher) |
| 108187 | O’Bryant | Blair | M | GA | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 110216 | O’Connor | Patrick | M | CA | US | 1 | Leona Divide 100k 2021 (16 hours) |
| 109309 | O’Hara | Stephen | M | MN | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108455 | O’Leary | Sean | M | Alaska | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108671 | O’Sullivan | Katherine | F | Reading | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 110258 | Oakes | Daniel | M | VA | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 101167 | Oatis | Doug | M | CO | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 103720 | Obery | Michael | M | ZAF | ZA | 2 | Karkloof 100m 2021 (Finisher) |
| 108920 | OBLACK | BRETT | M | New Mexico | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 104845 | Obrien | James | M | IL | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 104451 | Obsitos | Monica | F | CO | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104637 | Ochoa | Angel | M | AZ | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 101365 | Ochs | Monica | F | WA | US | 16 | Cascade Crest 100m 2021 (Finisher) |
| 107373 | Ochsner | Travis | M | CA | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 107837 | OConnell | Amy | F | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 101291 | Odell | David | M | CA | US | 4 | Zion 100k 2020 (19 hours) |
| 106970 | Odell | Deanna | F | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) | ||
| 105404 | Oederud | Thomas | M | NOR | NO | 2 | Salomon Rondane 100m 2021 (Finisher) |
| 102204 | Oehlberg | Kurt | M | PA | US | 4 | Long Haul 100m 2020 (Finisher) |
| 102066 | Oestrike | Brian | M | NY | US | 4 | Hardrock 100m 2021 (Finisher) |
| 110839 | Offersen | Henrik | M | Helsingør | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 101341 | Oflahrity | Rory | M | WA | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 100471 | Ogden | John Paul | M | CO | US | 16 | Bear, The 100m 2021 (Finisher) |
| 100146 | Ogier | Paul | M | FRA | FR | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 100658 | Ogly | Krystian | M | POL | PL | 16 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 108815 | Oh | Susan | F | OR | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 100319 | Ohler | Michael | M | DEU | DE | 8 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 108239 | Ohlrogge | Karmell | F | Ohio | US | 1 | No Business 100m 2021 (Finisher) |
| 105346 | Ohm | Johanna | F | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 110704 | Öhman | Mikael | M | Gotland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 107706 | Ojeda | Chris | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107376 | OKeeffe | Dan | M | Waterford | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 100621 | Oktavec | Thomas | M | OH | US | 8 | Mohican 100m 2021 (Finisher) |
| 109725 | Olafsen | Jan Rikard | M | Agder | NO | 1 | Kullamannen 100m 2021 (Finisher) |
| 109245 | Olafson | Helgi | M | FL | US | 1 | IMTUF 100m 2021 (Finisher) |
| 106971 | Olar | John | M | 4 | Zion 100k 2021 (19 hours) | ||
| 107833 | Olcot | Edward | M | Surrey | GB | 1 | Autumn 100m 2020 (Finisher) |
| 108044 | Oleskey | Samatha | F | OH | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 105602 | Olexa | Raymond | M | CO | US | 2 | Never Summer 103k 2020 (23 hours) |
| 105226 | Oliphant | James | M | OR | US | 16 | Cascade Crest 100m 2021 (Finisher) |
| 108879 | Oliphant | Steven | M | CA | US | 1 | Thames Path 100 100m 2021 (Finisher) |
| 106542 | Olivares | Adrian | M | CA | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 110847 | Oliveira | Ninive | F | SC | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 104567 | Oliver | Brenan | M | CA | US | 16 | Bighorn 100m 2021 (Finisher) |
| 105775 | Oliver | James | M | AUS | AU | 2 | Blackall 100K 100k 2020 (18 hours) |
| 106417 | Olivo | Manny | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 110858 | Olle Bernades | Marc | M | Barcelona | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103089 | Olsen | Anna | F | CA | US | 8 | Waldo 100k 2021 (17 hours) |
| 106311 | Olsen | Shawn | M | OR | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 108166 | Olson | Devon | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 102895 | Olson | Sean | M | ID | US | 2 | IMTUF 100m 2021 (Finisher) |
| 100660 | Omodt | Elizabeth | F | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 107759 | Oney | Jamie | M | Kentucky | US | 1 | No Business 100m 2021 (Finisher) |
| 104517 | Ongena | Ann | F | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 109833 | Ono | Shannon | M | NV | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 101830 | Opgenorth | Greg | M | CO | US | 8 | Never Summer 103k 2021 (23 hours) |
| 105098 | Orillac | Jose | M | PAN | PA | 4 | Leadville Trail 100m 2021 (Finisher) |
| 103696 | Ormiston | Michael | M | HKG | HK | 2 | Hong Kong 100K 100k 2020 (23 hours) |
| 109322 | Ormon | Elena | F | California | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 106544 | Ormond | Wesley | M | AL | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 109710 | Ormuz | Tina | F | Dubai | AE | 1 | Moab 240 238m 2021 (102 hours) |
| 107305 | Orquiza | Retzel | M | NCR | PH | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109930 | Orr | Donnie | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110761 | Orstad | Carl | M | MN | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108962 | Ortega | Joseph | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 107605 | Ortiz | Anne | F | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105480 | Ortiz | Michael | M | NY | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 110103 | Ortiz Seas | Jose Carlos | M | Alajuela | CR | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110484 | Orzechowska | Katarzyna | F | Vienna | AT | 1 | Mozart 100 108k 2021 (22 hours) |
| 101372 | Osborne | Kedric | M | OR | US | 32 | Mountain Lakes 100m 2021 (Finisher) |
| 105546 | Osborne | Steve | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108249 | Oshima | Tomio | M | AZ | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 105095 | Oskvig | Daven | M | NY | US | 64 | Canal Corridor 100 100m 2021 (Finisher) |
| 101303 | Osollo | Carlos | M | TX | US | 16 | HOKA Bandera 100k 2020 (17 hours) |
| 101260 | Ostaszewski | Melissa | F | OR | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 101620 | Ostaszewski | Sarah | F | AZ | US | 16 | Javelina Jundred 100m 2021 (Finisher) |
| 108521 | Östlund | Daniel | M | Stockholm | SE | 1 | Taby Extreme Challenge 100 100m 2020 (Finisher) |
| 100282 | Ostlund | Henrik | M | SWE | SE | 32 | Taby Extreme Challenge 100 100m 2020 (Finisher) |
| 105063 | Ostrosky | Gwendolyn | F | CA | US | 16 | Tarawera 100K 102k 2020 (17 hours) |
| 105187 | Ostrzinski | Joerg | M | DEU | DE | 2 | Autumn 100m 2021 (Finisher) |
| 104769 | Otaki | Yoshio | M | NC | US | 32 | Cruel Jewel 106m 2021 (Finisher) |
| 108051 | Ott | Daniel | M | Florida | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 109224 | Ott | Matthias | M | Bavaria | US | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107694 | ouellette | Charles-Ugo | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 102778 | Ovah | Steven | M | AZ | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 103624 | Overbay | Keith | M | FL | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 102807 | Owata | Timothy | M | MN | US | 4 | Beaverhead 100k 2020 (19 hours) |
| 108830 | Owen | Blake | M | Ohio | US | 1 | Burning River 100m 2020 (Finisher) |
| 107982 | Owen | Michael | M | OH | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 110221 | Owen | Timothy | M | London | GB | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 107691 | Owens | Brent | M | CO | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107318 | Owens | Nathan | M | UT | US | 1 | Bryce 100m 2021 (Finisher) |
| 100920 | Owens | Todd | M | AB | CA | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103532 | Owensby | Amanda | F | CA | US | 2 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 109783 | Øvstehage | Vemund | M | Trøndelag | NO | 1 | Salomon Rondane 100m 2021 (Finisher) |
| 103692 | Pack | Steven | M | NY | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 101406 | Padilla | Sunshine | F | NC | US | 8 | Grindstone 100m 2021 (Finisher) |
| 109619 | Padovan | Anna | F | VA | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 102942 | Padula | Karen | F | SC | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 105964 | Page | Adam | M | IA | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108892 | Page | Vincent | M | BERKSHIRE | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 110321 | Pakish | Braddley | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109932 | Palamar | Mark | M | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 107404 | Palej | Jakub | M | Illinois | US | 1 | Zion 100k 2021 (19 hours) |
| 104391 | Palframan | James | M | BC | CA | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 104352 | Palma | Julio | M | PA | US | 2 | Eastern States 100m 2021 (Finisher) |
| 108842 | Palmer | Jeremy | M | Varsinais-Suomi | FI | 1 | Beaverhead 100k 2021 (19 hours) |
| 104811 | Palmer | William | M | GA | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 102399 | Palubeski | Joe | M | CA | US | 8 | Siskiyou Outback 100k 2021 (17 hours) |
| 108834 | Pana | Roxana | F | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 104931 | Panama | Carlos | M | SLV | SV | 16 | Twisted Branch 100k 2021 (19 hours) |
| 107606 | Panas | Robert | M | Colorado | US | 1 | Worlds End 100k 2021 (19 hours) |
| 109343 | Pang | Eric | M | Washington | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 106278 | Pang | Siu Chuen | M | HKG | HK | 8 | Hong Kong 100K 100k 2020 (23 hours) |
| 101389 | Panice | Nich | M | AZ | US | 4 | Hennepin 100m 2021 (Finisher) |
| 108017 | Pantani | Jeannette | F | NC | US | 1 | Yeti 100m 2020 (Finisher) |
| 107924 | Papay | Brian | M | Ohio | US | 1 | Burning River 100m 2021 (Finisher) |
| 108583 | Papiernik | Alanna | F | CO | US | 1 | Yeti 100m 2020 (Finisher) |
| 102599 | Pappas | Greg | M | WA | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 108151 | Paquini García | Jonathan | M | Veracruz | MX | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 100338 | Paradise | Jeff | M | SC | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 106394 | Paradowski | Jon | M | SK | CA | 32 | Lost Soul Ultra 100k 2021 (21 hours) |
| 107901 | Pardoux | Adam | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 101091 | Pardy | Robert | M | CA | US | 32 | Black Canyon 100k 2021 (17 hours) |
| 107258 | paredes | maria | F | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 110697 | Parham | Andrew | M | Virginia | US | 1 | Grindstone 100m 2021 (Finisher) |
| 106611 | Parise | Justin | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109177 | Parise | Marco | M | Gorizia | IT | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 103732 | Park | James | M | HKG | HK | 4 | Hong Kong 100K 100k 2020 (23 hours) |
| 105199 | Park | Luanne | F | CA | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 108875 | Park | Matthew | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 101796 | Park | Yury | F | CA | US | 16 | Burning River 100m 2021 (Finisher) |
| 109543 | Parker | Austin | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107869 | Parker | Bradley | M | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 103998 | Parker | Morgan | M | OR | US | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106496 | Parker | Shaun | M | AB | CA | 4 | Canadian Death Race 125k 2021 (24 hours) |
| 107399 | Parker | Thomas | M | Floirda | US | 1 | Umstead 100m 2021 (Finisher) |
| 100878 | Parks | Casey | M | CA | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 106977 | Parks | Raymond | M | 2 | Race to the Stones 100k 2021 (17 hours) | ||
| 104855 | Parlin | Giant | M | ME | US | 2 | Bear, The 100m 2020 (Finisher) |
| 109052 | Parnell | Bard | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 106662 | Parnell | William | M | CA | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 103508 | Parra | Juan | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 103083 | Parsons | Todd | M | AL | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 110816 | Pasanen | Hannes | M | Uusimaa | FI | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 108896 | Passenti | Brian | M | Colorado | US | 1 | Moab 240 238m 2021 (102 hours) |
| 107290 | Pastorkovich | Alex | M | CA | US | 1 | Zion 100m 2021 (Finisher) |
| 100431 | Pate | Jarrod | M | AR | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 102270 | Patent | Jason | M | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 107742 | Patja | Kevin | M | CA | US | 1 | Waldo 100k 2021 (17 hours) |
| 106388 | Patrick | Sean | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 101913 | Patterson | Sam | M | CA | US | 8 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 104203 | Patterson | Tyler | M | KS | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 107818 | Patterson Jr | Philip | M | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 104737 | Pattison | Gary | M | GBR | GB | 4 | Autumn 100m 2021 (Finisher) |
| 109520 | Pattison | Kristina | F | MT | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107656 | Patton | Michael | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 102595 | Patton | Michael | M | GA | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 101096 | Patzer | David | M | PA | US | 2 | Eastern States 100m 2021 (Finisher) |
| 109298 | Paul | Dagmar | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 110165 | Paul | Ryan | U | PA | US | 1 | Zion 100k 2021 (19 hours) |
| 101781 | Paulin | Kelley | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109340 | Paull | Bart | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 102355 | Pawlak | Angela | F | WA | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 102907 | Pawluk | Don | M | WA | US | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 105942 | Paxton | Ben | M | AZ | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 105641 | Payne | Daniel | M | TX | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 108441 | Payne | Edward | M | Roscommon | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 109076 | Payne | Helen | F | California | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 105073 | Peabody | Hillary | F | VA | US | 16 | Zion 100m 2021 (Finisher) |
| 103945 | Peacock | Joseph | M | OR | US | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 105130 | Peacock | Malcolm | M | AUS | AU | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 103780 | Peake | Justin | M | MD | US | 1 | Hellgate 100k 2020 (17 hours) |
| 108213 | Pearce | Henry | M | Tyne & Wear | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 100745 | Pearce | Lance | M | CO | US | 32 | Pinhoti 100m 2020 (Finisher) |
| 107904 | Pearce | Tyler | M | Florida | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 108346 | Pearch | Lauren | F | Ohio | US | 1 | Burning River 100m 2021 (Finisher) |
| 105149 | Pearson | Anabel | F | TX | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102661 | Pearson | Andy | M | CA | US | 16 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110593 | Pearson | Larry | M | TX | US | 1 | Hardrock 100m 2021 (Finisher) |
| 110207 | pechnik | marko | M | WI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 103826 | Pecoul | Olivier | M | FRA | FR | 32 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 106982 | Peddy | Andrew | M | 2 | Burning River 100m 2020 (Finisher) | ||
| 110194 | Peddy | Melissa | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 109146 | Pediac | Jakub | M | Slovakia | SK | 1 | Ponitrianska 105k 2021 (24 hours) |
| 103006 | Pedras | Rui | M | PRT | PT | 128 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 107284 | Peharda | Matt | M | Oregon | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109488 | PELISSON | Vincent | M | Ain | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110382 | Pelland | Marie-Eve | F | Québec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 106984 | Pellegrini | Beniamino | M | 4 | Ultra-Trail Cape Town 100k 2019 (17 hours) | ||
| 101792 | Pellerin | Jonathan | M | QC | CA | 8 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109879 | Pelletier | Jeff | M | British Columbia | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 103464 | Peltonen | Garrett | M | NM | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 110760 | Pemberton | Sarah | F | Hong Kong | HK | 1 | Ultra-Trail Tai Mo Shan 115k 2020 (34 hours) |
| 100238 | Pemsel | Dennis | M | DEU | DE | 8 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 101439 | Pena | Cinthia | F | MEX | MX | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110374 | Pena | Gustavo | M | CA | US | 1 | Bryce 100m 2021 (Finisher) |
| 102423 | Pena | Luis | M | CA | US | 32 | Castle Peak 100k 2021 (21 hours) |
| 102640 | Pena | Miguel | M | TX | US | 16 | Hardrock 100m 2021 (Finisher) |
| 101872 | Pence | Ethan | M | CA | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 104697 | Penkov | Kostya | M | GBR | GB | 8 | Tarawera 100K 102k 2020 (17 hours) |
| 104171 | Penner | Marcus | M | VA | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 109517 | Pennington | Joel | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 106300 | Penzone | Kim | F | OH | US | 2 | Umstead 100m 2021 (Finisher) |
| 106284 | Penzone | Peter | M | OH | US | 4 | Umstead 100m 2021 (Finisher) |
| 106580 | Peoples | Michael | M | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 107625 | PERESSE | MARC | M | PACA | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107676 | Peretz | Idan | M | Israel | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108125 | Perez | Cory | M | California | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 110131 | Perez | Melissa | F | CA | US | 1 | Leona Divide 100k 2021 (16 hours) |
| 107223 | Perez | Pete, IV | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 100447 | Perez Colon | Francisco | M | PR | PR | 4 | Arkansas Traveler 100m 2021 (Finisher) |
| 109108 | Perez Gonzalez | Ignacio | M | Madrid | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 105301 | Pergolizzi | James | M | NY | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 104015 | Perkins | Philip | M | PA | US | 8 | Eastern States 100m 2021 (Finisher) |
| 109361 | Perkonigg | Matthias | M | Vienna | AT | 1 | Mozart 100 108k 2021 (22 hours) |
| 108465 | Peroni | Samuele | M | RA | IT | 1 | Tuscany Crossing 103k 2021 (21 hours) |
| 110402 | Perrell | Josh | M | CALIFORNIA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110880 | Perrett | Adam | M | AB | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108284 | Perriard | Real | M | Ontario | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 103186 | Perrier | Dominique | M | LA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 109408 | Perrier | Martin | M | Genève | CH | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110294 | Perry | Alexander | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 110882 | Perry | Brandon | M | WV | US | 1 | Grindstone 100m 2021 (Finisher) |
| 101745 | Perry | Hannah | F | BC | CA | 2 | HURT 100m 2020 (Finisher) |
| 102311 | Perry | Jeff | M | IA | US | 8 | Never Summer 103k 2020 (23 hours) |
| 102343 | Perry | Matthew | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 101752 | Persaud | Harry | M | OH | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110212 | Persic | Mauro | M | Croatia | HR | 1 | Istria 168k 2021 (Finisher) |
| 103411 | Person | Brad | M | AZ | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 101738 | Perz | Jon | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102370 | Peter | Kris | M | GBR | GB | 8 | Thames Path 100 100m 2021 (Finisher) |
| 104812 | Peterman | David | M | OH | US | 16 | Burning River 100m 2021 (Finisher) |
| 108225 | Petersen | Drew | M | CO | US | 1 | IMTUF 100m 2021 (Finisher) |
| 107744 | Petersen | Heine | M | 1470 | NO | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 102122 | Petersen Baldrica | Kristin | F | CA | US | 2 | Bear, The 100m 2021 (Finisher) |
| 101837 | Peterson | Gabe | M | CA | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 109471 | Peterson | Håkan Ygge | M | Scania | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 102531 | Peterson | Jeremy | M | ID | US | 8 | Burning River 100m 2021 (Finisher) |
| 107544 | Peterson | Kristina | F | FL | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107746 | Peterson | Lars | M | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 108408 | Peterson | Logan | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 106986 | Peterson | Nicholas | M | CO | US | 64 | Hardrock 100m 2021 (Finisher) |
| 108345 | Peterson | Robert | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 106987 | Peterson | Robert | M | 4 | Black Canyon 100k 2021 (17 hours) | ||
| 105696 | Peterson | Stephen | M | AK | US | 64 | Rio Del Lago 100m 2021 (Finisher) |
| 102233 | Peterson | Thomas | M | PA | US | 8 | Hellgate 100k 2019 (17 hours) |
| 104866 | Peterson | Trevor | M | NM | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104408 | Peterson | Tyler | M | FL | US | 32 | Long Haul 100m 2021 (Finisher) |
| 107914 | Pethe | Michael | M | Grisons | CH | 1 | SwissPeaks 170k 2021 (Finisher) |
| 109531 | Petrenko | Maksym | M | MD | US | 1 | Grindstone 100m 2021 (Finisher) |
| 104281 | Petretto | Stephen | M | OR | US | 32 | Black Canyon 100k 2021 (17 hours) |
| 107880 | Petrillo | Michelle | F | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107155 | Pettenger | Ward | M | GA | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 102728 | Pettorossi | Hernan | M | ARG | AR | 2 | Patagonia 112k 2021 (27 hours) |
| 110241 | Peyton | Mark | M | WV | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110683 | Pfaff | Dustin | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 103267 | Pfeffer | Wayne | M | CA | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 110478 | Pham | Minh-Anh | M | British Columbia | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 100399 | Pham | Nam | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 108811 | Pham | Pam | F | Texas | US | 1 | Yeti 100m 2020 (Finisher) |
| 107973 | Pham | Tin | M | NC | US | 1 | Zion 100k 2021 (19 hours) |
| 106988 | Pharr | David | M | 2 | Bighorn 100m 2021 (Finisher) | ||
| 106022 | Phenix | Lindsay | F | CA | US | 2 | Hennepin 100m 2021 (Finisher) |
| 108471 | Phillip | Phillip | M | QLD | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 110000 | Phillips | Matthew | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105127 | Phillips | Paul | M | NV | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108644 | Phillips | Simon | M | London | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 107964 | Phillips | Stormy | M | Oklahoma | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109222 | Phonggammornragg | Woodtimes | M | Bangkok | TH | 1 | Pong Yaeng Trail 166k 2019 (Finisher) |
| 100516 | Pi | Jerry | M | NY | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 107844 | Piala | Chad | M | CO | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 105009 | Piatek | Mateusz | M | POL | PL | 2 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 107612 | Picard | Francis | M | QC | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 102043 | Picker | James | M | CA | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 101140 | Pickett | Brian | M | TN | US | 1 | Western States 100m 2021 (Finisher) |
| 109808 | Pickett | Brigid | F | Massachusetts | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109348 | Pickle | Tyler | M | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 103788 | Piecha | Artur | M | POL | PL | 16 | Mozart 100 108k 2021 (22 hours) |
| 101400 | Piechota | Gregg | M | NY | US | 2 | Yeti 100m 2020 (Finisher) |
| 107255 | Piel | Sebastian | M | Rheinland-Pfalz | DE | 1 | Mozart 100 108k 2021 (22 hours) |
| 100329 | Piepgrass | Ammon | M | GBR | GB | 2 | Thames Path 100 100m 2021 (Finisher) |
| 107892 | Pierce | Raymond | M | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 103124 | Pieri-McCaffrey | Katy | F | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 102429 | Pierson | Jason | M | CA | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 106991 | Pietluszenko | Dariusz | M | Mazovian | PL | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 100044 | Pigott | Tim | M | GBR | GB | 2 | Transgrancanaria 125k 2020 (28 hours) |
| 110020 | Pikh | Yuriy | M | Madrid | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 109461 | Pilon | Brent | M | Ontario | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109189 | Pinho | Rui | M | Porto | PT | 1 | Istria 128k 2021 (28 hours) |
| 109727 | Pinsonneault | Yves | M | MD | US | 1 | Zion 100k 2021 (19 hours) |
| 106265 | Pinter | Joseph | M | FL | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 103583 | Piovesan | Francesco | M | CHE | CH | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 109017 | Pipe | James | M | ACT | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 110234 | Piper | Keaton | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 106993 | Piper | Mathew | M | VIC | AU | 16 | Surf Coast Century 100k 2020 (16 hours) |
| 107366 | Pisano | Diane | F | Colorado | US | 1 | No Business 100m 2021 (Finisher) |
| 106994 | Pisarski | Joanna | F | 4 | Javelina Jundred 100m 2021 (Finisher) | ||
| 101113 | Pise | Pradeep | M | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 110627 | Pitts | Gregory | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 101824 | Plate | Wes | M | WA | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 107296 | Platz | Shawn | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 109542 | plaut | alexandre | M | bouches du rhone | FR | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101938 | Player | Cora | F | SC | US | 2 | Rim to River 100m 2021 (Finisher) |
| 110646 | Pleat | Brian | M | OHIO | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 107920 | Plichta | Katherine | F | FL | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 102536 | Plourde | Julia | F | NH | US | 8 | Indiana 100m 2021 (Finisher) |
| 106996 | Pluess | Christian | M | Aargau | CH | 4 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 101255 | Pluim | Tom | M | VA | US | 1 | Hellgate 100k 2020 (17 hours) |
| 109965 | Plum | Colette | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102712 | Podles | Robert | M | POL | PL | 4 | Tarawera 100K 102k 2020 (17 hours) |
| 110352 | Pogue | Luke | M | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 102302 | Poirier | Sebastien | M | FRA | FR | 2 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 108164 | Poland | Andrew | M | CO | US | 1 | Bear, The 100m 2020 (Finisher) |
| 109354 | Polinger | Greg | M | Noord-Holland | NL | 1 | Ultra Trail Vipava Valley 160k 2021 (Finisher) |
| 103250 | Polito | Christopher | M | AZ | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 108723 | Polito | Peter | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100903 | Polski | Daniel | M | MN | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 100870 | Polski | Rachel | F | MN | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 103725 | Pomerleau | Jean-Francois | M | QC | CA | 2 | Quebec Mega Trail 110k 2021 (22 hours) |
| 101454 | Pomeroy | Blake | M | MA | US | 2 | Twisted Branch 100k 2021 (19 hours) |
| 105317 | Ponder | Danny | M | OK | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 109535 | PONSARDIN | Alexandre | M | TASHKENT | UZ | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 110201 | Pontious | Corbin | M | OH | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 108351 | Pontius | Marie | F | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100477 | Poole | David | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 102952 | Poole | Dawn | F | CA | US | 2 | Bear, The 100m 2021 (Finisher) |
| 106998 | Poole | James | M | London | GB | 16 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 100888 | Poole | Michael | M | NC | US | 1 | Western States 100m 2021 (Finisher) |
| 110282 | Poore | Heidi | F | TN | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110682 | Pop | Adrian | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 109407 | Pope | Chris | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108710 | Pope | Eric | M | NM | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 108302 | pope | Ian | M | CA | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106999 | Pope | Jeremy | M | Ohio | US | 4 | Canal Corridor 100 100m 2021 (Finisher) |
| 105332 | Pope | Joseph | M | CA | US | 32 | Leona Divide 100k 2021 (16 hours) |
| 110074 | Popp | Adam | M | Colorado | US | 1 | Tunnel Hill 100m 2020 (Finisher) |
| 105309 | Porter | Mark | M | ID | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 108270 | Poskanzer | Sheri | F | Idaho | US | 1 | Western States 100m 2021 (Finisher) |
| 102918 | Poskin | Brady | M | MO | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 108353 | Posner | Cameron | M | OH | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109280 | Post | Matthew | M | Queensland | AU | 1 | Blackall 100K 100k 2020 (18 hours) |
| 101222 | Pote | Kristin | F | OR | US | 2 | Bear, The 100m 2021 (Finisher) |
| 101776 | Potvin | Jenelle | F | CA | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 103733 | Poulatov | Azam | M | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 110124 | Poveda | David | M | Ohio | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 110614 | Power | Sophie | F | Surrey | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 101885 | Powers | Jenna | F | WA | US | 16 | Zion 100k 2021 (19 hours) |
| 100575 | Pracht | Stefan | M | GBR | GB | 2 | Transgrancanaria 125k 2021 (28 hours) |
| 107602 | Prado Gutiérrez | Juan Alberto | M | Asturias | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 108297 | Prairie | Chris | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109507 | Prats | Jordi | M | Mallorca | ES | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 104362 | Pratt | Jeremy | M | OH | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101349 | Prentice | Jack | M | MN | US | 4 | Superior 100 100m 2021 (Finisher) |
| 110328 | Preston | Steven | M | Maryland | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108814 | Pretorius | Jansen | M | North west | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 103021 | Price | Chris | M | CO | US | 4 | Bear, The 100m 2021 (Finisher) |
| 110819 | Price | Daniel | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101682 | Price | Jill | F | TX | US | 2 | Bear, The 100m 2020 (Finisher) |
| 110189 | Pride | Doug | M | IL | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108337 | Pridham | Sam | M | British Columbia | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 107151 | Priest | Adam | M | Colorado | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 103555 | Prieto Saiz | Lorenzo | M | ESP | ES | 2 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 107755 | PRITCHARD | DANIEL | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 102051 | Proch | Mark | M | FL | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 101659 | Proctor | Charles | M | CA | US | 32 | Wasatch Front 100m 2021 (Finisher) |
| 100585 | Prohaska | Meghan | F | TN | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 102107 | Prokop | Jaro | M | GBR | GB | 16 | Krakonosova Stovka 100k 2021 (22 hours) |
| 108347 | Pronske | Keith | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 107520 | Prosser | Jamie | M | NY | US | 1 | Umstead 100m 2021 (Finisher) |
| 107282 | Protsyk | Roman | M | Ukraine | UA | 1 | Istria 168k 2021 (Finisher) |
| 103964 | Pruett | Troy | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 103554 | Pryor | Luke | M | AUS | AU | 8 | Blackall 100K 100k 2020 (18 hours) |
| 109085 | Prytkov | Arkadii | M | Moscow | RU | 1 | Golden Ring 100K 100k 2021 (18 hours) |
| 100727 | Pryznyk | Don | M | AB | CA | 2 | Canadian Death Race 125k 2021 (24 hours) |
| 104580 | Przepiora | Tomasz | M | NJ | PL | 2 | Never Summer 103k 2021 (23 hours) |
| 107556 | Pucci | Michael | M | Georgia | US | 1 | Burning River 100m 2021 (Finisher) |
| 110055 | Puckett | Kelley | F | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109848 | Pulaski | Thomas | M | New York | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 102349 | Pullar | Michael | M | NZL | NZ | 2 | Tarawera 100K 102k 2021 (17 hours) |
| 105208 | Pulley | Benjamin | M | OH | US | 16 | Mohican 100m 2021 (Finisher) |
| 109099 | Punter | Spencer | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 102037 | Pupa | Andrew | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 104752 | Pupkov | Dmitry | M | RUS | RU | 2 | Tarawera 100M 100m 2020 (30 hours) |
| 107260 | Purcell | Anna | F | NM | US | 1 | Bighorn 100m 2021 (Finisher) |
| 108996 | Purdy | George | M | Indiana | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110407 | Puretz | Lauren | F | CO | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 108442 | Purschke | André | M | Bayern | DE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109817 | Pursey | Debbie | F | CA | US | 1 | Zion 100k 2020 (19 hours) |
| 108289 | Putrich | Chris | M | IL | US | 1 | Zion 100k 2021 (19 hours) |
| 108919 | Puzey | Jacob | M | British Columbia | CA | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101592 | Pynappel | Roger | M | CA | US | 64 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 107328 | Pytka | Brendan | M | NJ | US | 1 | Eastern States 100m 2021 (Finisher) |
| 107533 | qian | xue | F | California | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 104630 | Qin | Gang | M | CA | US | 8 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 104771 | Quallen | Eric | M | WY | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 109779 | Quast | Karl | M | Victoria | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 109359 | Quatromoni | Ben | M | Rhode Island | US | 1 | Eastern States 100m 2021 (Finisher) |
| 110133 | Queiros | Joao Paulo | M | Coimbra | PT | 1 | Trail de Conímbriga Terras de Sicó 111k 2020 (24 hours) |
| 103841 | Quek | Kok Kwang | M | SGP | SG | 16 | Hong Kong 100K 100k 2020 (23 hours) |
| 108386 | Querry | Keith | M | PA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108199 | Quiceno E | German Dario | M | Bogota DC | CO | 1 | Mozart 100 108k 2021 (22 hours) |
| 108363 | quilty | jenny | F | BC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 100501 | Quint | Jordan | M | TN | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 104867 | Quintana | Donald | M | LA | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107785 | QUIRICO | SCOTT | M | OR | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 110733 | Rabb | Scott | M | TX | US | 1 | Bighorn 100m 2021 (Finisher) |
| 100721 | Raby | Jennifer | F | GA | US | 4 | Yeti 100m 2020 (Finisher) |
| 109328 | Raehl | Jason | M | OR | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 109254 | Rafalski | Doug | M | PA | US | 1 | Laurel Highlands 70.5m 2020 (20 hours) |
| 101818 | Rafferty | Mike | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 103040 | Raffo | Nico | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 109427 | Ragainis | Ivars | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 103278 | Raghavendra | Achyut | M | AR | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 104944 | Ragni | Chris | M | IL | US | 8 | Kettle Moraine 100m 2021 (Finisher) |
| 102564 | Raguet-Schofield | Rob | M | CO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 103782 | Rahmer | Mike | M | NM | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 108975 | Railey | Brock | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105056 | Rains | Austin | M | WA | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 108557 | Rains | Jerry | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 107420 | Rajaraman | Siva | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 100463 | Rajkowski | Tony | M | MN | US | 2 | Hennepin 100m 2021 (Finisher) |
| 109429 | Rakoski | Paul | M | New York | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 104153 | Raley | Lindsay | M | FL | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 107167 | Ralph | Ian | M | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 107941 | Ramer | Andi | F | CA | US | 1 | Bryce 100m 2021 (Finisher) |
| 101904 | Ramirez | Adrian | M | CA | US | 8 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106024 | Ramirez | Israel | M | CA | US | 32 | Canyons, The 100k 2021 (19 hours) |
| 108089 | Ramirez | Manuel | M | Mexico | MX | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103269 | Rammell | Jared | M | CO | US | 2 | Never Summer 103k 2020 (23 hours) |
| 110287 | Ramos | Jeff | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110584 | Ramras | Monique | F | OR | US | 1 | IMTUF 100m 2021 (Finisher) |
| 107850 | Ramsby | Ryan | M | WV | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103708 | Randene | Joseph | M | NC | US | 2 | Indiana 100m 2021 (Finisher) |
| 103211 | Rangel | Efren | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 100197 | Rankin | Jeremy | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108970 | Ranta | Lari | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103151 | Ranweiler | Curt | M | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 100829 | Rao | Anil | M | CA | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 107009 | Rao | Shashwat | M | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) | ||
| 101124 | Rapp | Kevin | M | MO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 109259 | Raschke | Bren | M | IL | US | 1 | Zion 100m 2021 (Finisher) |
| 107010 | Rashid | Terri | F | Arizona | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 107648 | Rasmussen | Amanda | F | South Dakota | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108969 | Rathbun | Bryan | M | Az | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109759 | Rattananavathong | Karoon | M | Bangkok | TH | 1 | Pong Yaeng Trail 108k 2021 (30 hours) |
| 103232 | Rattanasriampaipong | Ronnakrit | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108414 | Rattray | Eric | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 104343 | Rauen | Tom | M | IA | US | 16 | Beaverhead 100k 2021 (19 hours) |
| 104359 | Ravaglia | Mark | M | HI | US | 2 | HURT 100m 2020 (Finisher) |
| 107197 | Rawls | Jack | M | AL | US | 1 | Yeti 100m 2021 (Finisher) |
| 108403 | Rawn | Daniel | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 104781 | Ray | Brandon | M | TX | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 101293 | Ray | Brandy | F | TX | US | 4 | Javelina Jundred 100m 2020 (Finisher) |
| 107493 | Ray | Jeffrey | M | NH | US | 1 | Yeti 100m 2021 (Finisher) |
| 109582 | Ray | Sean | M | Ca | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 105024 | Rayburg | Casey | M | MD | US | 8 | Laurel Highlands 70.5m 2021 (20 hours) |
| 110348 | Raymond | Luke | M | Victoria | US | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 110270 | Razzoli | Maria | F | Minnesota | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 101785 | Rea | Jonathan | M | CO | US | 4 | Never Summer 103k 2020 (23 hours) |
| 100096 | Reader | Paul | M | GBR | GB | 64 | Autumn 100m 2021 (Finisher) |
| 101055 | Readinger | Andrew | M | TX | US | 64 | Cascade Crest 100m 2021 (Finisher) |
| 109155 | Reagan | Patrick | M | GA | US | 1 | Western States 100m 2021 (Finisher) |
| 108827 | Reardon | Matthew | M | MA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107444 | Reardon | Michael | M | North Carolina | US | 1 | Yeti 100m 2021 (Finisher) |
| 101789 | Rebennack | Eve | F | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 110248 | Rebol | Angela | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 103317 | Redfern | Stephen | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109618 | Redpath | Glen | M | NY | US | 1 | Zion 100k 2021 (19 hours) |
| 110392 | Redpath | Kumi | F | NY | US | 1 | Zion 100k 2021 (19 hours) |
| 110680 | Redus | Ivan | M | CA | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 102534 | Reed | Adam | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 103034 | Reed | Andy | M | AB | CA | 4 | Black Canyon 100k 2020 (17 hours) |
| 102372 | Reed | Gregory | M | OR | US | 4 | Waldo 100k 2021 (17 hours) |
| 107972 | Reed | Matthew | M | Florida | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104722 | Reed | Pam | F | WY | US | 16 | Hardrock 100m 2021 (Finisher) |
| 105400 | Reeder | Cody | M | UT | US | 8 | Bear, The 100m 2021 (Finisher) |
| 104527 | Reese | Dani | F | OR | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 107364 | Reese | James | M | CA | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 100606 | Reeves | Greg | M | AL | US | 4 | Pinhoti 100m 2020 (Finisher) |
| 105551 | Regehr | Bentley | M | CA | US | 4 | Bighorn 100m 2021 (Finisher) |
| 107537 | Reichel | Aubree | F | WA | US | 1 | Indiana 100m 2021 (Finisher) |
| 107504 | Reichelt | Don | M | Colorado | US | 1 | Tunnel Hill 100m 2020 (Finisher) |
| 105372 | Reichert | Bryan | M | OR | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 106668 | Reiff | Andrew | M | WA | US | 1 | Western States 100m 2021 (Finisher) |
| 107958 | Reilly | Brent | M | AL | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 101062 | Reily | Matthew | M | OK | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109614 | Reimers | Christian | M | Carinthia | AT | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 110485 | Reis | Jian | M | Gauteng | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 101533 | Reis | Wanderley | M | UT | US | 16 | Zion 100m 2021 (Finisher) |
| 107263 | Reisz | Elizabeth | F | KY | US | 1 | Burning River 100m 2021 (Finisher) |
| 108364 | Remenda | Joseph | M | Alberta | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 103888 | Remley | Nathaniel | M | MN | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 103077 | Ren | Dapeng | M | CHN | CN | 4 | Ultra Trail Ninghai 108k 2020 (28 hours) |
| 105589 | Renfro | Jason | M | UT | US | 2 | Zion 100m 2021 (Finisher) |
| 107372 | Renfrow | Jim | M | Ohio | US | 1 | Mohican 100m 2021 (Finisher) |
| 110195 | Renner | Andrew | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105601 | Renner | Dirk | M | OR | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 100408 | Rennick | Stephen | M | AUS | AU | 32 | Surf Coast Century 100k 2020 (16 hours) |
| 102305 | Rensel | Christopher | M | OR | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 110178 | Rentie | Marcus | M | CA | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 100567 | Rescorla | Eric | M | CA | US | 2 | Sean O'Brien 100k 2021 (16 hours) |
| 108163 | Resendiz | Luis | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 105537 | Ressl-Moyer | Robert | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 108598 | Retzke | Jessica | F | Ohio | US | 1 | Never Summer 103k 2021 (23 hours) |
| 105906 | Reuss | Hagen | M | OH | US | 2 | Indiana 100m 2021 (Finisher) |
| 100134 | Reuter | Steffen | M | DEU | DE | 4 | Ultra-Trail Tai Mo Shan 115k 2020 (34 hours) |
| 101610 | Revenis | Bradley | M | MD | US | 16 | Sean O'Brien 100k 2021 (16 hours) |
| 102197 | Rex | Jimmy | M | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 110870 | Reyes | Rachel | F | IL | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105937 | Reyes | Ulises | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 108041 | REYNARTZ | Nadine | F | Liege | BE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 107013 | Reynolds | Alan | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 109673 | Reynolds | Amanda | F | NC | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 101253 | Reynolds | Jasha | M | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 109444 | Reynolds | Jeff | M | Illinois | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108624 | Rezucha | Ivan | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 100248 | Ribu | Dan | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103775 | Riccadonna | Francesco | M | ON | CA | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 107015 | Rice | William | M | Wa | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 108260 | Rich | Aaron | M | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 109081 | Rich | Kieran | M | Wa | AU | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 103507 | Richard | Valerie | F | HKG | HK | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106017 | Richards | Christi | F | MT | US | 8 | IMTUF 100m 2021 (Finisher) |
| 105963 | Richards | Ethan | M | MT | US | 8 | IMTUF 100m 2021 (Finisher) |
| 103372 | Richardson | Doug | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108781 | Richardson | Glenn | M | KY | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 105350 | Richardson | Jon | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108543 | Richardson | Tara | F | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 100405 | Richie | Michael | M | GA | US | 32 | Quicksilver 100k 2021 (16 hours) |
| 101817 | Richner | Jonathan | M | WA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 100499 | Richter | Jake | M | TX | US | 32 | HOKA Bandera 100k 2020 (17 hours) |
| 108833 | Rickard | Brian | M | ARKANSAS | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 109901 | Rickard | Jamie | M | West Virginia | US | 1 | Rim to River 100m 2021 (Finisher) |
| 100986 | Rickels | Michael | M | CA | US | 16 | Rio Del Lago 100m 2021 (Finisher) |
| 102929 | Riddle | Stacie | F | CA | US | 32 | Wasatch Front 100m 2021 (Finisher) |
| 107873 | Rider | Steven | M | CA | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107845 | Ridolfi | Jacopo | M | Italy | IT | 1 | Abbots Way 125k 2021 (28 hours) |
| 108259 | Ridolfo | Jim | M | KY | US | 1 | No Business 100m 2021 (Finisher) |
| 104573 | Riedeman | David | M | WI | US | 8 | Zion 100m 2021 (Finisher) |
| 100801 | Riefenberg | Dan | M | IL | US | 16 | Kettle Moraine 100m 2021 (Finisher) |
| 102892 | Riehl | Eric | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 110776 | Riekoff | Christian | M | Mecklenburg Vorpommern | DE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 106151 | Rifkin | Jeff | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 109411 | RIGARD | Mickael | M | France | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108702 | Riggs | John | M | South Carolina | US | 1 | Yeti 100m 2021 (Finisher) |
| 108606 | Rigoni | Mirko | M | Italy | IT | 1 | Tuscany Crossing 103k 2021 (21 hours) |
| 110383 | Riley | Christopher | M | Florida | US | 1 | Never Summer 103k 2020 (23 hours) |
| 109250 | Riley | James | M | Surrey | GB | 1 | Autumn 100m 2021 (Finisher) |
| 107348 | Riley | Mark | M | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 110219 | Riley | Thomas | M | Oregon | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 107322 | Ring-Jarvi | Ross | M | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101438 | Ringled | Kenneth | M | CA | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 102690 | Rinkenberger | Matt | M | NE | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 105941 | Riordan | Gerard | M | AUS | AU | 16 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107368 | Riordan | Sarah | F | Montana | US | 1 | Bighorn 100m 2021 (Finisher) |
| 110615 | RIOS PITA | Ezequiel | M | CABA | AR | 1 | Tor des Géants 330k 2021 (132 hours) |
| 108064 | Rioux | Marc | M | GA | US | 1 | Beaverhead 100k 2020 (19 hours) |
| 109815 | Ritchie | Angela | F | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100302 | Ritchie | Joe | M | AL | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 100636 | Ritchie | Jordan | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 109451 | Ritchie | Susan | F | Middlesex | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 107817 | Ritter | Tex | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 103835 | Rittgers | Mary | F | CO | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 110266 | Rivas Moreno | Julio | M | Madrid | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 106594 | Rivera | Maria | F | CA | US | 2 | Leona Divide 100k 2021 (16 hours) |
| 110902 | Rivera | Nicholas | M | VA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 108211 | Rivera | Ryan | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 101445 | Rivers | Andrew | M | MT | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 105008 | Rizzo | Carlo | M | ITA | IT | 4 | Abbots Way 125k 2021 (28 hours) |
| 102639 | Roach | Christopher | M | UT | US | 2 | IMTUF 100m 2021 (Finisher) |
| 107017 | Roane | Rebecca | F | 2 | Javelina Jundred 100m 2021 (Finisher) | ||
| 108979 | Roark | Alan | M | OK | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109071 | Roark | Steve | M | Arizona | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 104369 | Robbert | Michael | M | CO | US | 4 | Mohican 100m 2021 (Finisher) |
| 100626 | Robbins | Amy | F | IN | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 102347 | Robbins | Brian | M | UT | US | 8 | Wasatch Front 100m 2021 (Finisher) |
| 100614 | Robbins | Chris | M | MN | US | 8 | Hellgate 100k 2019 (17 hours) |
| 107704 | Robbins | John | M | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100091 | Robbins | Mark | M | UT | US | 4 | Bear, The 100m 2020 (Finisher) |
| 107974 | Robert | Hajnal | M | HUNEDOARA | RO | 1 | Penyagolosa 115k 2021 (26 hours) |
| 100309 | Roberto | Alescia | F | OH | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 100869 | Roberts | Chris | M | MO | US | 16 | Hellgate 100k 2020 (17 hours) |
| 100625 | Roberts | Christopher | M | AUS | AU | 16 | Surf Coast Century 100k 2020 (16 hours) |
| 107019 | Roberts | David | M | 16 | Black Canyon 100k 2020 (17 hours) | ||
| 105510 | Roberts | David | M | AZ | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 105565 | Roberts | Karen | F | TX | US | 2 | Tunnel Hill 100m 2019 (Finisher) |
| 106511 | Roberts | Logan | M | FL | US | 2 | Never Summer 103k 2020 (23 hours) |
| 108595 | roberts | ryan | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107407 | Roberts | Simon | M | CO | US | 1 | IMTUF 100m 2020 (Finisher) |
| 107370 | Roberts | Vince | M | IL | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 106453 | Robertson | Alex | M | CO | US | 2 | Hardrock 100m 2021 (Finisher) |
| 110489 | Robertson | Mack | M | OR | US | 1 | IMTUF 100m 2021 (Finisher) |
| 101666 | Robertson | Nicholas | M | NV | US | 2 | Bryce 100m 2020 (Finisher) |
| 107725 | Robertson | Riley | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110278 | Robidoux | Kyle | M | MA | US | 1 | Umstead 100m 2021 (Finisher) |
| 109588 | Robinette | Brian | M | PA | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 103902 | Robins | Luke | M | VT | US | 16 | Wasatch Front 100m 2021 (Finisher) |
| 101934 | Robinson | Brent | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 105701 | Robinson | Ian | M | AUS | AU | 2 | Tarawera 100M 100m 2020 (30 hours) |
| 105379 | Robinson | Jon | M | WA | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 101615 | Robinson | Max | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 109544 | Robinson | Shane | M | New Hampshire | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100031 | Robinson | William | M | CA | US | 16 | Siskiyou Outback 100k 2021 (17 hours) |
| 101271 | Robles | Matthew | M | CA | US | 8 | Cascade Crest 100m 2021 (Finisher) |
| 110041 | ROCKWELL | MICAIAH | M | AL | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 102296 | Rodger | Jordan | M | GBR | GB | 4 | Autumn 100m 2020 (Finisher) |
| 101847 | Rodgers | Brian | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101947 | Rodgers | Stephen | M | CO | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 103744 | Rodriguez | Carlos | M | MA | US | 2 | Grindstone 100m 2021 (Finisher) |
| 107448 | Rodriguez | Jean-Francois | M | Occitanie | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110794 | Rodriguez | Paul | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108994 | Roe | Kandace | F | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 107931 | Roehm | Rebecca | F | Oregon | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 104389 | Roersma | Jake | M | MI | US | 8 | Zion 100k 2021 (19 hours) |
| 110737 | Rogers | Christen | F | New Mexico | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108905 | Rogers | Daniel | M | NY | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 104621 | Rogers | Scott | M | AB | CA | 2 | Canadian Death Race 125k 2021 (24 hours) |
| 110739 | Rogers | Shawn | M | New Mexico | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107177 | Rogers | Tye | M | Utah | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107020 | Roggow | Isaiah | M | 4 | Bryce 100m 2021 (Finisher) | ||
| 104782 | Rohner | Mike | M | IA | US | 1 | Western States 100m 2021 (Finisher) |
| 109422 | Roivainen | Juha | M | Not Specified | FI | 1 | Nuts Ylläs Pallas 160k 2021 (Finisher) |
| 107357 | Rojas | Christopher | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 110756 | Rolain | Justin | M | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 110881 | Rolbiecki | Shannon | F | WA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100193 | Rolfe | Helen | F | AUS | AU | 4 | Blackall 100K 100k 2020 (18 hours) |
| 103300 | Rollins | Laura | F | NC | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 103359 | Rollins | Mark | M | NC | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 107911 | Romanato | Leonardo | M | Bologna | IT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 107230 | Romero | Jason | M | New Mexico | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 103236 | Romero | Ted | M | CO | US | 16 | Run Rabbit Run 100m 2021 (Finisher) |
| 107275 | Romero-Lopez | Diane | F | Florida | US | 1 | Yeti 100m 2021 (Finisher) |
| 104344 | Rood | Adam | M | KY | US | 32 | Hellgate 100k 2019 (17 hours) |
| 108981 | Rookes | James (Jim) | M | VIC | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 110164 | Rooney | Kyle | M | MN | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107217 | Rooney | Vail | M | Colorado | US | 1 | Never Summer 103k 2020 (23 hours) |
| 109596 | Roper | David | M | TX | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109569 | Rosales Jr | Ramon | M | Texas | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 108400 | Rose | Casey | M | Montana | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110590 | Rose | Eric | M | Wi | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 108901 | Rose | Rebekah | F | UT | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 104670 | Rose | Todd | M | TN | US | 8 | Tunnel Hill 100m 2020 (Finisher) |
| 101428 | Rosenberg | Hal | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 110522 | Rosenblad | Peter | M | TN | US | 1 | No Business 100m 2021 (Finisher) |
| 107695 | Rosenleaf | Donald | M | MT | US | 1 | IMTUF 100m 2021 (Finisher) |
| 107021 | Roskovics | Nyikolaj | M | 16 | The North Face Thailand 100k 2020 (17 hours) | ||
| 100415 | Ross | Anatoly | M | ON | CA | 16 | Wasatch Front 100m 2021 (Finisher) |
| 109234 | Ross | Crystal | F | MA | US | 1 | Umstead 100m 2021 (Finisher) |
| 110256 | Ross | Cullen | M | New York | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108335 | Ross | Kent | M | Nebraska | US | 1 | Bryce 100m 2021 (Finisher) |
| 101490 | Ross | Matt | M | GA | US | 8 | Bryce 100m 2021 (Finisher) |
| 110711 | Rostagni | Benoit | M | Ile de France | FR | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110052 | Roth | Alden | M | PA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109791 | Roth | David | M | Florida | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 109565 | Roth | Katie | F | LA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100734 | Rothman-Zecher | Moriel | M | OH | US | 2 | Canal Corridor 100 100m 2021 (Finisher) |
| 110577 | Roux | Stephen | M | Haute Savoie | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105925 | Rovera | Rene | M | FRA | FR | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104045 | Rowbury | Steve | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108495 | Rowlands | Gareth | M | Surrey | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 101829 | Roy | Guillaume | M | QC | CA | 4 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109900 | Roy | Sebastien | M | Quebec | CA | 1 | Quebec Mega Trail 100m 2021 (Finisher) |
| 107828 | Rozar | Katie | F | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 109480 | Rozo | Fabio | M | MN | US | 1 | Zion 100m 2021 (Finisher) |
| 110272 | Rubau Trayter | Xavier | M | Catalunya | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107838 | Rubin | Alexander | M | Wallis | CH | 1 | Swiss Alps 100k 100k 2021 (22 hours) |
| 100879 | Rubinstein | Scott | M | CO | US | 8 | Never Summer 103k 2020 (23 hours) |
| 110874 | Rubio | Guy | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107626 | Rubio | Reyes | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 107907 | Rudd | Chuck | M | AL | US | 1 | Yeti 100m 2020 (Finisher) |
| 108669 | Rudy | Gwendolyn | F | Colorado | US | 1 | Zion 100m 2021 (Finisher) |
| 108012 | Rugloski | Christiana | F | TX | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 103574 | Ruick | Paul | M | DEU | DE | 2 | Trail Verbier St Bernard 111k 2021 (33 hours) |
| 108832 | Ruiz Velez | Mingo | M | Catalunya | US | 1 | Tor des Géants 330k 2021 (132 hours) |
| 109641 | Rummler | Joe | M | GA | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107624 | Runes | Emmanuel | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110108 | Rupp | Thomas | M | Zurich | CH | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108117 | Rush | Kris | M | pa | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 108160 | Rushforth | William | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109454 | Russell | Josh | M | NY | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109773 | Russell | Mari | F | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109649 | Russell | Raymond | M | NY | US | 1 | Zion 100m 2021 (Finisher) |
| 100439 | Russell | Rick | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 107971 | Russell | Rickey | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 109288 | Russell | Shawn | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 100582 | Russo | Anthony | M | NJ | US | 16 | Laurel Highlands 70.5m 2020 (20 hours) |
| 100927 | Russo | Jennifer | F | OH | US | 4 | Mohican 100m 2021 (Finisher) |
| 109129 | Rust | Linda | F | Texas | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 102071 | Rustvold | Leif | M | OR | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 103111 | Ruthenbeck | Andrew | M | NV | US | 2 | Hellgate 100k 2020 (17 hours) |
| 108670 | Ruthenbeck | Anne | U | NV | US | 1 | Yeti 100m 2021 (Finisher) |
| 101063 | Rutherford | Bret | M | NY | US | 8 | Wasatch Front 100m 2021 (Finisher) |
| 104618 | Rutherford | Kevin | M | OR | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 107228 | Rutter | Helen | F | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 100194 | Rutter | Lauren | F | GBR | GB | 4 | Thames Path 100 100m 2020 (Finisher) |
| 107239 | Rutter | Ryan | M | OH | US | 1 | Burning River 100m 2021 (Finisher) |
| 104874 | Ruzza | Stefano | M | ITA | IT | 32 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 107267 | Ryan | Daniel | M | CA | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107244 | Ryan | Daniel | M | New Mexico | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 109091 | Ryan | Dominique | F | Buderim | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 102054 | Ryan | Emily | F | DC | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 106596 | Ryan | Greg | M | WI | US | 8 | No Business 100m 2021 (Finisher) |
| 101669 | Ryan | Jim | M | WA | US | 16 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110521 | Ryan | Matthew | M | NC | US | 1 | Grindstone 100m 2021 (Finisher) |
| 105580 | Ryan | Michelle | F | TX | US | 16 | Bighorn 100m 2021 (Finisher) |
| 105299 | Ryan | Nicholas | M | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 108550 | Ryan | Tamatha | F | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 100349 | Ryder | John | M | GBR | GB | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 101275 | Ryhorchuk | Kent | M | CA | US | 2 | Hardrock 100m 2021 (Finisher) |
| 109040 | Ryley | Christopher | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 108570 | Rynearson | Lee | M | NC | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 110184 | Rypinski | Tatiana | F | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100482 | Sabater | Jean | M | IL | US | 8 | Hennepin 100m 2021 (Finisher) |
| 107956 | Sabath | Matthew | M | PA | US | 1 | Burning River 100m 2021 (Finisher) |
| 110313 | Sabbe | Karel | M | West-Flanders | BE | 1 | Grand Trail des Lacs et Ch√¢teaux 165k 2021 (Finisher) |
| 106033 | Sabo | Emily | F | AB | CA | 4 | Sean O'Brien 100k 2021 (16 hours) |
| 106209 | Sachse | Patrick | M | PA | US | 2 | Mohican 100m 2021 (Finisher) |
| 106638 | Sacks | Brianna | F | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 104609 | Saenger | David | M | OR | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 100455 | Saft | Aaron | M | NC | US | 16 | Umstead 100m 2021 (Finisher) |
| 108908 | Saftich | Geoff | M | Colorado | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 105260 | Sagaskie | Erin | F | IL | US | 2 | Yeti 100m 2020 (Finisher) |
| 108615 | Sager | Michael | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110459 | Saint-Pierre | Xavier | M | Qc | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 108313 | Sak | Lawrence | M | MI | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107189 | Salas | Ryan | M | APO | DE | 1 | Tuscany Crossing 103k 2021 (21 hours) |
| 109456 | SALAZAR | JULIO | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107026 | Saleh | Mike | M | 2 | Black Canyon 100k 2021 (17 hours) | ||
| 110337 | Salgado | Angel | M | Madrid | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 110482 | Salinas | Rankin | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109323 | Sallee | Hunter | M | Oklahoma | US | 1 | Never Summer 103k 2020 (23 hours) |
| 108577 | Salmon | Ronan | M | France | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 108619 | Salsgiver | Charles | M | MD | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 105890 | Salt | Sarah | F | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 107028 | Salter | Bert | M | Maryland | US | 16 | Hellgate 100k 2020 (17 hours) |
| 104111 | Salvesen | Greg | M | NM | US | 64 | Hardrock 100m 2021 (Finisher) |
| 104827 | Salyer | Shawn | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 110527 | Samano | Rene | M | IL | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 107652 | Samant | Adwait | M | CA | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108412 | Samartinean | Vasile | M | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105959 | Sambommatsu | Chika | F | JPN | JP | 2 | HURT 100m 2020 (Finisher) |
| 107173 | Sambrook | Andy | M | Kent | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 109559 | Sambucci | Scott | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108982 | Sames | Richard | M | TX | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 110277 | Sammons | Ryder | M | NY | US | 1 | Mohican 100m 2021 (Finisher) |
| 106183 | Sammur | Wael | M | MO | US | 8 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 101732 | Samoylov | Vasily | M | CA | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 110742 | Sanchez | Rodrigo Emanuel | M | Mendoza | AR | 1 | Patagonia 112k 2021 (27 hours) |
| 109440 | Sánchez Serrano | Manuel Alejandro | M | Murcia | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 110334 | Sandborn | Sarah | F | MI | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 104683 | Sanders | James | M | GBR | GB | 2 | North Downs Way 100m 2021 (Finisher) |
| 105364 | Sanderson | David | M | CA | US | 2 | Bear, The 100m 2020 (Finisher) |
| 107915 | Sanderson | Janet | F | Rhode island | US | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105146 | Sandoval | Anthony | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 101835 | Sandoval | Marvin | M | CO | US | 64 | Leadville Trail 100m 2021 (Finisher) |
| 105922 | Sandoval | Wesley | M | CO | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 110672 | Sandoval Ramirez | Alejandro Cesar | M | Quebec | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109192 | Sankey | Mike | M | Ohio | US | 1 | Mohican 100m 2020 (Finisher) |
| 107418 | Sanner | Brett | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 108959 | Sansone | Ugo | M | Teramo | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107029 | Santer | Johann Peter | M | Hong Kong | HK | 2 | Hong Kong 100K 100k 2020 (23 hours) |
| 109484 | SANTIAGO NAVARRO | Jose Luis | M | Madrid | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108664 | Santillana | Leonardo | M | NV | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 101696 | Santilli | Sara | F | HI | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 105763 | Santos | Alejandra | F | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 105716 | Santos | Juan | M | MA | US | 2 | Burning River 100m 2021 (Finisher) |
| 100291 | Santos | Nuno | M | GBR | GB | 4 | Tor des Géants 330k 2021 (132 hours) |
| 107858 | Santos | Rodrigo | M | Cambridgeshire | GB | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 102737 | Santurri | Laura | F | Ohio | US | 2 | Canal Corridor 100 100m 2021 (Finisher) |
| 108607 | Sanzo | Karen | F | VA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104102 | Sargent | Rob | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 105446 | Sari | Tami | F | PA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108676 | Sarkis | Kelly | F | PA | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 107281 | Sarmento | Justin | M | Washington | US | 1 | Bryce 100m 2021 (Finisher) |
| 100887 | Sarmiento | Jose Carlos | M | GTM | GT | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 110043 | Sarris | Nicholas | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105988 | Sasaki | Takuji | M | JPN | JP | 1 | Western States 100m 2021 (Finisher) |
| 101523 | Sasaki | Yasushi | M | BC | CA | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 107256 | Sashida Duffour | Ronel | M | Mexico City | MX | 1 | Zion 100k 2021 (19 hours) |
| 108845 | Sasinka | Aramis | M | Kvarner | HR | 1 | Kullamannen 100m 2021 (Finisher) |
| 105886 | Sass | Alexander | M | CHE | CH | 16 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 107273 | Sasser | William | M | AL | US | 1 | Bear, The 100m 2020 (Finisher) |
| 102097 | Satterthwaite | Dane | M | GBR | GB | 2 | Thames Path 100 100m 2020 (Finisher) |
| 109137 | Sauer | David | M | GA | US | 1 | Yeti 100m 2021 (Finisher) |
| 101460 | Sauer | Eric | M | My Van | US | 4 | Waldo 100k 2021 (17 hours) |
| 109133 | Sauer | Sally | F | GA | US | 1 | Yeti 100m 2020 (Finisher) |
| 105913 | Saulnier | Emmett | M | OR | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 104246 | Saunders | Ian | M | CA | US | 8 | Yeti 100m 2020 (Finisher) |
| 107975 | SAUVAGE | DOMINIQUE | M | BRETAGNE | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101318 | Savage | Dan | M | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 109695 | Saville | David | M | Qld | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 102985 | Savimaki | Ilkka | M | GBR | GB | 2 | Autumn 100m 2021 (Finisher) |
| 100265 | Sawad | Sony | M | PHL | PH | 2 | Grindstone 100m 2021 (Finisher) |
| 110572 | Saye | Tucker | M | Co | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107324 | Sayre | Edward | M | MS | US | 1 | Burning River 100m 2021 (Finisher) |
| 105295 | Scaife | Mark | M | VA | US | 4 | Laurel Highlands 70.5m 2021 (20 hours) |
| 103993 | Scanlan | Jeremy | M | MA | US | 8 | Bear, The 100m 2020 (Finisher) |
| 101706 | Scarber | Mike | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 102118 | Scarbrough | John | M | CA | US | 32 | Zion 100m 2021 (Finisher) |
| 104956 | Scerbo | Kenneth | M | NY | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 101965 | Schaar | Matthew | M | DC | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 107748 | Schacherl | Jeffrey | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109800 | Schaffenrath | Lukas | M | Salzburg | AT | 1 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 109029 | Schaffner | Michael | M | IL | US | 1 | Yeti 100m 2021 (Finisher) |
| 109247 | Schalkx | Radmer | M | Utrecht | NL | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100251 | Schasse | Elisa | F | VA | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 103890 | Schaunaman | Scott | M | TX | US | 16 | Never Summer 103k 2021 (23 hours) |
| 108605 | Scheidt | Derek | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 107306 | Scheiter | Sebastian | M | California | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 110676 | Scheldeman | Bjorn | M | Antwerp | BE | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 108134 | Schell | Brooke | F | Pennsylvania | US | 1 | Mohican 100m 2020 (Finisher) |
| 107871 | Schenberger | Mark | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107355 | Schendel-Dittmann | Megan | F | WA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108825 | SCHEPEL | CHRIS | M | MI | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 103894 | Scherzer | Michael | M | GA | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 107270 | Schick | Lara | F | WY | US | 1 | IMTUF 100m 2021 (Finisher) |
| 102151 | Schindler | Louis | M | NZL | NZ | 2 | Tarawera 100M 100m 2021 (30 hours) |
| 109120 | Schirra | Nathan | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 102269 | Schjei | Kathryn | F | CA | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 101484 | Schjelderup | Christina | F | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 100588 | Schlabach | Josh | M | OH | US | 2 | Mohican 100m 2020 (Finisher) |
| 107751 | Schlachte | Peter | M | DC | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 110773 | Schlarb | Jason | M | CO | US | 1 | IMTUF 100m 2020 (Finisher) |
| 110623 | Schlemmer | Christoph | M | Vienna | AT | 1 | Mozart 100 108k 2021 (22 hours) |
| 108761 | Schlosser | Nathaniel | M | Alaska | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 109795 | Schmal | Julie | F | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 107031 | Schmaltz | Heidi | F | 2 | Lost Soul Ultra 100k 2021 (21 hours) | ||
| 105204 | Schmid | John | M | CA | US | 4 | Moab 240 238m 2021 (102 hours) |
| 110308 | Schmid | Manuel | M | Zürich | CH | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 103003 | Schmid | Steven | M | IL | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 101005 | Schmidt | Eddie | M | Oregon | US | 4 | Waldo 100k 2021 (17 hours) |
| 103314 | Schmidt | Sean | M | OR | US | 8 | Leadville Trail 100m 2021 (Finisher) |
| 108809 | Schmierer | Daniel | M | NY | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 103252 | Schmitt | Mike | M | MN | US | 32 | Superior 100 100m 2021 (Finisher) |
| 109577 | Schmitt | Tim | M | Indiana | US | 1 | Indiana 100m 2021 (Finisher) |
| 108753 | Schmitt | Tom | M | Bayern | DE | 1 | Mozart 100 108k 2021 (22 hours) |
| 108149 | Schnabl | Sophia | F | Tirol | US | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 102910 | Schnaitter | Karl | M | CA | US | 32 | Quicksilver 100k 2021 (16 hours) |
| 100178 | Schneekloth | Martin | M | AL | US | 2 | Moab 240 238m 2021 (102 hours) |
| 102165 | Schneiderman | Jim | M | NC | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 102147 | Schnepp | Michael | M | CT | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 107165 | Schnorbach | Peter | M | MN | US | 1 | Bighorn 100m 2021 (Finisher) |
| 102749 | Schoening | Trudi | F | CO | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 108810 | Scholl | Ann | F | WI | US | 1 | Indiana 100m 2021 (Finisher) |
| 108247 | Scholz | Lucy | F | LA | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102078 | Schooler | Michael | M | CA | US | 32 | Castle Peak 100k 2021 (21 hours) |
| 108736 | Schöps | Sven | M | Berlin | DE | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 109769 | SCHRAM | LAURENT | M | Reunion island | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109816 | Schreiber | Michael | M | Ohio | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109767 | Schreiber | Tobias | M | NRW | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107787 | Schroeder | Brad | M | AB | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 103828 | Schroeder | Jason | M | OR | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 103919 | Schrum | Joe | M | AZ | US | 64 | Black Canyon 100k 2021 (17 hours) |
| 102063 | Schuessler | Tim | M | IL | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 108102 | Schultz | Christina | F | British Columbia | CA | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 110436 | Schultz | Derek | M | Pa | US | 1 | Eastern States 100m 2021 (Finisher) |
| 109691 | Schulz-Nigmann | Lueder | M | Rheinland-Pfalz | DE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110088 | Schulze | Dirk | M | VA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108510 | Schummer | Sherri | F | MN | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 100833 | Schurk | Christopher | M | CO | US | 32 | Cascade Crest 100m 2021 (Finisher) |
| 100491 | Schuster | Nick | M | GA | US | 8 | Georgia Death Race 74m 2021 (23 hours) |
| 100002 | Schuster | Stefan | M | CO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 109020 | Schwamlein | Keiko | F | CO | US | 1 | Long Haul 100m 2020 (Finisher) |
| 108114 | Schwark | Maria | F | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 108973 | Schwartz | Brian | M | NY | US | 1 | Burning River 100m 2021 (Finisher) |
| 101431 | Schwartz | Paul | M | CA | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 107310 | Schwartz | Robert | M | California | US | 1 | Sean O'Brien 100k 2021 (16 hours) |
| 109568 | Schwartzbard | Aaron | M | DC | US | 1 | Hellgate 100k 2020 (17 hours) |
| 101462 | Schwarzbauer | Alexander | M | FL | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 108553 | Schwee | Rylee | F | Maryland | US | 1 | Burning River 100m 2021 (Finisher) |
| 100874 | Schweitzer | Lauren | F | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 107300 | Schweizer | Lars | M | Deutschland | DE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 101145 | Schwenkenberg | Alexander | M | CA | US | 8 | Sean O'Brien 100k 2021 (16 hours) |
| 104572 | Schwindt | Eric | M | OR | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 110714 | Sciarretta | Christian | M | PE | IT | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 102788 | Scobie | Stephen | M | NY | US | 8 | HOKA Bandera 100k 2020 (17 hours) |
| 109781 | Scofield | Martin | M | Huesca | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107604 | Scoggin | Gideon | M | TN | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 104826 | Scoggins | Michael | M | OK | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 107035 | Scogings | Michael | M | 16 | Cruel Jewel 106m 2021 (Finisher) | ||
| 101959 | Scolavino | Jesse | F | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 105497 | Scott | Alexandre | M | QC | CA | 4 | Quebec Mega Trail 100m 2021 (Finisher) |
| 101815 | Scott | Amy | F | NC | US | 2 | Umstead 100m 2021 (Finisher) |
| 102568 | Scott | Cara | F | CA | US | 16 | Black Canyon 100k 2020 (17 hours) |
| 109771 | Scott | David | M | Idaho | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109678 | Scott | Hunter | M | New South Wales | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104288 | Scott | John | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 107425 | Scott | Kevin | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 105669 | Scott | Kirstin | F | MI | US | 32 | Burning River 100m 2021 (Finisher) |
| 107037 | Scott | Stacy | F | Ohio | US | 2 | Yeti 100m 2020 (Finisher) |
| 100924 | Scott | Todd | M | MI | US | 64 | Wasatch Front 100m 2021 (Finisher) |
| 102796 | Scott | William | M | NC | US | 8 | Georgia Death Race 74m 2020 (23 hours) |
| 109843 | Scott-Green | Zoe | F | Skye | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 107038 | Scozzaro | Sarah | F | WA | US | 16 | Indiana 100m 2021 (Finisher) |
| 107174 | Scrogham | Jerry | M | Kentucky | US | 1 | No Business 100m 2021 (Finisher) |
| 103478 | Seads | Sarah | F | BC | CA | 1 | Western States 100m 2021 (Finisher) |
| 109239 | Searle | Derrick | M | CO | US | 1 | Zion 100m 2021 (Finisher) |
| 105891 | Searle-Brown | Sarah | F | GBR | GB | 2 | Race to the Stones 100k 2021 (17 hours) |
| 103159 | Sears | Mike | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 110244 | Seconi | Matteo | M | NY | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 102424 | Secord | David | M | IL | US | 4 | Superior 100 100m 2021 (Finisher) |
| 104926 | Sedin | Dana | M | CO | US | 2 | Never Summer 103k 2020 (23 hours) |
| 110772 | Sedivy | Nicholas | M | OH | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108132 | Seeba | Garett | M | TX | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 108687 | Seeba | Kat | F | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104138 | Seely | Jonathan | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 108484 | Seewald | David | M | Hessen | DE | 1 | Mozart 100 108k 2021 (22 hours) |
| 110777 | Segal | Jeremy | M | MN | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110644 | Seguin | Jean-Francois | M | Québec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109976 | Seher | Eckhardt | M | Berlin | DE | 1 | Kullamannen 100m 2021 (Finisher) |
| 101272 | Seher | Kari | F | TX | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 101023 | Seidel | Will | M | SC | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 104860 | Seifert | Eric | M | MI | US | 4 | Burning River 100m 2020 (Finisher) |
| 108460 | Sekhuthe | Kennedy | M | South Africa | ZA | 1 | SkyRun 100k 2020 (28 hours) |
| 100515 | Selonick | Emily | F | CO | US | 4 | Bighorn 100m 2021 (Finisher) |
| 103701 | Semerjian | Maria | F | FRA | FR | 8 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 107164 | Semin | Parker | M | Colorado | US | 1 | Bighorn 100m 2021 (Finisher) |
| 100509 | Semonell | Jodi | F | NE | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 101778 | Sen | Niloy | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 108930 | Sena | Amanda | F | Ca | US | 1 | Zion 100k 2021 (19 hours) |
| 104659 | Senda | Yui | M | Kanagawa | JP | 8 | Beaverhead 100k 2020 (19 hours) |
| 109963 | Sendell | Greg | M | London | GB | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108039 | Sengo | Martin | M | CA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 106766 | Senne | De Schouwer | M | België | BE | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 101354 | Senseman | Eric | M | AZ | US | 1 | Western States 100m 2021 (Finisher) |
| 102878 | Servais | Mallory | F | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 105217 | Service | Patrick | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108688 | Serving | Björn | M | Skåne | US | 1 | Kullamannen 100m 2021 (Finisher) |
| 108630 | Setser | Adam | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107396 | Settles | Chris | M | GA | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 101216 | Severino | Anthony | M | IL | US | 128 | Indiana 100m 2021 (Finisher) |
| 104513 | Severson | Christopher | M | CA | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 101972 | Sewell | Lauren | F | AR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 101691 | Seymour | Nick | M | OK | US | 128 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109126 | Sgarlata | Francesco | M | Lombardia | IT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101883 | Shade | Kyle | M | NV | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 103850 | Shafer | Brian | M | CT | US | 16 | Leadville Trail 100m 2021 (Finisher) |
| 107936 | Shaffer | Rachel | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 109839 | Shah | Nilesh | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 105781 | Shah | Samir | M | CA | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 108281 | Shalvoy | Corinne | F | CO | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 104983 | Shankool | Moghlis | M | MI | US | 8 | Mohican 100m 2021 (Finisher) |
| 103838 | Shannon | Ben | M | OH | US | 2 | Bryce 100m 2021 (Finisher) |
| 109628 | Shannon | Richard | M | Central | ZM | 1 | Karkloof 100m 2021 (Finisher) |
| 104123 | Shapiro | Aaron | M | MD | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 107042 | Sharbono | Brian | M | Florida | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 101877 | Shark | Jonathan | M | CO | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 107803 | Sharman | Ian | M | OR | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107820 | Sharp | John | M | Texas | US | 1 | Hardrock 100m 2021 (Finisher) |
| 103805 | Sharp | Joshua | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 103075 | Shaw | Brandon | M | IN | US | 8 | Never Summer 103k 2020 (23 hours) |
| 108534 | Shaw | Daniel | M | Georgia | US | 1 | Yeti 100m 2021 (Finisher) |
| 103027 | Shaw | Gary | M | MO | US | 2 | Indiana 100m 2021 (Finisher) |
| 104702 | Shaw | Keith | M | GBR | GB | 16 | Thames Path 100 100m 2020 (Finisher) |
| 108804 | Shaw | William | M | GA | US | 1 | Yeti 100m 2021 (Finisher) |
| 107360 | Shawhan | Robert | M | Washington | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109680 | Sheahan | Nolan | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107172 | Shearon | Paula | F | North Carolina | US | 1 | Umstead 100m 2021 (Finisher) |
| 105896 | Shearouse | Peter | M | AL | US | 8 | IMTUF 100m 2020 (Finisher) |
| 105542 | Shebert | Rachel | F | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 108910 | Sheckler | Craig | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 101679 | Sheefel | Sarah | F | CA | US | 16 | Siskiyou Outback 100k 2021 (17 hours) |
| 107043 | Sheehan | Tim | M | 16 | Canal Corridor 100 100m 2021 (Finisher) | ||
| 100116 | Sheehan | William | M | GBR | GB | 4 | Thames Path 100 100m 2020 (Finisher) |
| 107883 | Sheets | Susan | F | Virginia | US | 1 | Hellgate 100k 2020 (17 hours) |
| 110854 | Sheetz-Willard | Jacob | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108914 | Shelby | Bo | M | CO | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107490 | Shelby | John | M | Missouri | US | 1 | Never Summer 103k 2021 (23 hours) |
| 101332 | Shell | Elizabeth | F | ME | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 109626 | Shelver | Michael | M | CA | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107434 | Shemanski | Randy | M | PA | US | 1 | Never Summer 103k 2021 (23 hours) |
| 101579 | Shemyakin | Mikhail | M | CA | US | 4 | Castle Peak 100k 2021 (21 hours) |
| 107816 | Shep | Michael | M | FL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 105800 | Shepherd | Brian | M | IN | US | 16 | Bryce 100m 2021 (Finisher) |
| 102126 | Shepherd | Elton | M | ID | US | 2 | Beaverhead 100k 2021 (19 hours) |
| 108437 | Sheppard | David | M | Hampshire | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 100460 | Sherback | John | M | MA | US | 2 | Yeti 100m 2020 (Finisher) |
| 100921 | Sherfey | Kenneth | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 101648 | Sherfy | Brett | M | VA | US | 1 | Western States 100m 2021 (Finisher) |
| 109194 | Sheridan | Taylor | F | Nevada | US | 1 | Western States 100m 2021 (Finisher) |
| 110222 | sherlock | Jake | M | Lothian | GB | 1 | Transgrancanaria 125k 2020 (28 hours) |
| 108685 | Sherman | Connor | M | ON | CA | 1 | Quebec Mega Trail 110k 2020 (22 hours) |
| 108522 | Sherwood | Christopher | M | Virginia | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 105135 | Shi | Fuqiang | M | CA | US | 4 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 110424 | Shiba | Scott | M | CA | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 107371 | Shideler | Samuel | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 108754 | Shields | Eric | M | Virginia | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109219 | Shields | Travis | M | IN | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 107960 | Shimmons | Aaron | M | County Antrim | IE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107304 | Shin | Ki | F | Alabama | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 103066 | Shin | Ohnmar | F | CA | US | 32 | Siskiyou Outback 100k 2021 (17 hours) |
| 100180 | Shinosky | Crystal | F | OH | US | 16 | Mohican 100m 2021 (Finisher) |
| 107427 | Shipley | Stuart | M | GB | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 106196 | Shirk | Benjamin | M | PA | US | 2 | Laurel Highlands 70.5m 2021 (20 hours) |
| 110033 | Shirley | Brad | M | PA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110054 | Shirley | Karlye | F | PA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 107266 | Shirola | Scott | M | CO | US | 1 | Bryce 100m 2020 (Finisher) |
| 101448 | Shiva | Sankalp | M | TX | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 107320 | Shobe | Justin | M | MT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 110647 | Shoemaker | Christopher | U | NY | US | 1 | Worlds End 100k 2020 (19 hours) |
| 109556 | Sholley | Jared | M | PA | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 103210 | Showers | Monica | F | FL | US | 4 | Yeti 100m 2021 (Finisher) |
| 104792 | Shremshock | Mikala | F | WV | US | 8 | Laurel Highlands 70.5m 2021 (20 hours) |
| 108523 | Shrier | Jordan | M | QC | CA | 1 | Black Canyon 100k 2020 (17 hours) |
| 108174 | Shugall | Ilyce | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107756 | Shulack | Jackie | F | New Jersey | US | 1 | Worlds End 100k 2020 (19 hours) |
| 104267 | Shultis | Jennifer | F | OR | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108555 | Shurtleff | Bruce | M | Ontario | CA | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109477 | Shyu | Rosalie | F | Il | US | 1 | Never Summer 103k 2020 (23 hours) |
| 107661 | Sicher | Nathan | M | Missouri | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 109113 | Sidhu | Steven | M | Oxfordshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 109700 | Siebert | Simon | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109961 | Sigle | Luke | M | Kansas | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 110655 | Sikoski | Paul | M | Florida | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110690 | Silva | Sergio | M | SP | BR | 1 | Brazil 135 135m 2021 (Finisher) |
| 102824 | Silva | Tommie | M | CA | US | 8 | Bear, The 100m 2021 (Finisher) |
| 107046 | Silveira | Marcelo | M | Fl | US | 8 | Long Haul 100m 2020 (Finisher) |
| 101545 | Sim | Phei Sunn | F | SGP | SG | 8 | The North Face Hong Kong 100k 2019 (27 hours) |
| 102849 | Simao | Jessica | F | NJ | US | 4 | Laurel Highlands 70.5m 2020 (20 hours) |
| 110501 | SIMARD | CHRISTOPHE | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 107257 | Simard | Isabelle | F | QC | CA | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101756 | Simcik | Trey | M | TX | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 102655 | Simcoff | Noah | M | CA | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 101021 | Simcox | Scott | M | TN | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 108389 | Simkins | Russell | M | MS | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 104353 | Simmerman | Sam | M | OH | US | 8 | Canal Corridor 100 100m 2021 (Finisher) |
| 107791 | Simmons | Christopher | M | WV | US | 1 | Mohican 100m 2021 (Finisher) |
| 107219 | Simmons | Ryan | M | CO | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 110599 | Simon | Rob | M | OH | US | 1 | Mohican 100m 2020 (Finisher) |
| 108769 | Simonds | Daniel | M | California | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 107047 | Simone | Maria | F | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) | ||
| 109285 | simoneau | patrick | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 108862 | Simonsen | Jan Espen | M | Hovedstaden | DK | 1 | Thames Path 100 100m 2020 (Finisher) |
| 101301 | Simpson | Andrew | M | PA | US | 32 | Worlds End 100k 2020 (19 hours) |
| 109291 | Sims | Grace | F | CO | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 110355 | sims | matt | M | Warwickshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 101233 | Sinclair | Ken | M | OR | US | 16 | Rio Del Lago 100m 2021 (Finisher) |
| 110090 | Sinclair | Paul | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107546 | Sines | Gary | M | Ohio | US | 1 | Canal Corridor 100 100m 2021 (Finisher) |
| 110155 | singh | jeevendra | M | london | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 105965 | Singh | Shavinder | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 101497 | Sipe | Laurel | F | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 101011 | Sirinian | Diran | M | ARG | AR | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 100300 | Sisengrath | Greg | M | TX | US | 16 | Bear, The 100m 2020 (Finisher) |
| 102167 | Sistermanns | Elmar | M | DEU | DE | 8 | Swiss Alps 100M 100m 2021 (Finisher) |
| 109693 | Sjöberg | Kristoffer | M | Nacka | SE | 1 | Täby Extreme Challenge 100 100m 2021 (Finisher) |
| 109409 | Sjolund | Steven | M | MN | US | 1 | Burning River 100m 2021 (Finisher) |
| 105850 | Skartvedt | Graig | M | NE | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 102868 | Skeels | Sam | M | MI | US | 4 | Tunnel Hill 100m 2020 (Finisher) |
| 109789 | Skelton | John | M | Gloucestershire | GB | 1 | Kullamannen 100m 2021 (Finisher) |
| 102259 | Skidnuk | Jordan | M | BC | CA | 2 | Canadian Death Race 125k 2021 (24 hours) |
| 110717 | SKJOEDEBERG | Gotfred | M | Denmark | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 110051 | Skoda | Ronald | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 103543 | Skorokhod | Oleksandr | M | UKR | UA | 2 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110800 | Skottrup | Peter Durand | M | - | DK | 1 | Kullamannen 100m 2021 (Finisher) |
| 109360 | Skowron | Radoslaw | M | Malopolska | PL | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108464 | Skrzysiński | Gniewomir | M | Podkarpackie | PL | 1 | Istria 168k 2021 (Finisher) |
| 108633 | Slack | Nick | M | Virginia | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108182 | Slagle | Mark | M | OH | US | 1 | Mohican 100m 2021 (Finisher) |
| 102198 | Slate | Elijah | M | TX | US | 32 | HOKA Bandera 100k 2020 (17 hours) |
| 101050 | Slate | Kim | F | OR | US | 8 | Mountain Lakes 100m 2021 (Finisher) |
| 100430 | Slater | Scott | M | CT | US | 1 | Western States 100m 2021 (Finisher) |
| 108864 | Slawson | Tyler | M | Washington | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 109253 | Śleziak | Tomasz | M | Opolskie | PL | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 109764 | Slobodian | Adam | M | MT | US | 1 | IMTUF 100m 2021 (Finisher) |
| 106290 | Slocum | Henry | M | MN | US | 2 | Bear, The 100m 2021 (Finisher) |
| 110058 | Slokowski | Brandon | M | Ohio | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 110034 | Slotterbach | Bryan | M | PA | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108396 | Slover | Shane | M | OR | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 107527 | Smallcomb | Chris | M | NV | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107734 | Smalley | Kevin | M | Essex | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 109984 | Smallwood | Eric | M | North Carolina | US | 1 | Rim to River 100m 2021 (Finisher) |
| 100228 | Smaltz | Bob | M | OH | US | 16 | Indiana 100m 2021 (Finisher) |
| 109144 | Smarrelli | Nick | M | IN | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 109182 | Smedsrød | Hans Kristian | M | Oslo | NO | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 108950 | Smeltzer | Eric | M | California | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 110011 | Smereciuc | Paul | M | Cluj | RO | 1 | Olympus Mythical Trail 100k 2020 (28 hours) |
| 110135 | Smid | Vojtech | M | Usti nad Labem | CZ | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 103156 | Smilor | Kevin | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 106468 | Smit | Pascal | M | NLD | NL | 8 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110569 | Smith | Aaron | M | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 102033 | Smith | Adam | M | AZ | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 100538 | Smith | Andrew | M | GBR | GB | 32 | Thames Path 100 100m 2020 (Finisher) |
| 108360 | Smith | Brandon | M | Utah | US | 1 | Bear, The 100m 2020 (Finisher) |
| 107050 | Smith | Brian | M | 4 | Pinhoti 100m 2020 (Finisher) | ||
| 103286 | Smith | Brian | M | PA | US | 8 | Never Summer 103k 2020 (23 hours) |
| 107686 | Smith | Brian | M | South Carolina | US | 1 | Yeti 100m 2021 (Finisher) |
| 100861 | Smith | Brian | M | FL | US | 8 | Long Haul 100m 2020 (Finisher) |
| 108501 | Smith | Chantelle | F | Nsw | AU | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 107554 | Smith | Chase | M | OH | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 109100 | Smith | Cherie | F | Bay of plenty | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 107362 | Smith | Christie | F | FL | US | 1 | Yeti 100m 2020 (Finisher) |
| 100646 | Smith | Christopher | M | TX | US | 16 | HOKA Bandera 100k 2021 (17 hours) |
| 108010 | SMITH | COREY | M | NY | US | 1 | Yeti 100m 2021 (Finisher) |
| 100317 | Smith | Craig | M | AL | US | 32 | Pinhoti 100m 2020 (Finisher) |
| 102000 | Smith | Darian | M | NC | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 109644 | Smith | Darren | M | California | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 104296 | Smith | Dave | M | WI | US | 8 | Bighorn 100m 2021 (Finisher) |
| 103013 | Smith | David | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 108274 | Smith | Derek | M | ID | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 101224 | Smith | Elliot | M | IL | US | 16 | Worlds End 100k 2021 (19 hours) |
| 109405 | Smith | Gregory | M | Montana | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 100162 | Smith | Gretchen | F | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104600 | Smith | Ian | M | ZAF | ZA | 4 | SkyRun 100k 2020 (28 hours) |
| 108793 | Smith | Jack | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 101536 | Smith | Jenny | F | CO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 109207 | Smith | Jonathan | M | PA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108304 | Smith | Kallie | F | MT | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105213 | Smith | Kirk | M | NY | US | 1 | Western States 100m 2021 (Finisher) |
| 110451 | Smith | Larry | M | Co | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 106361 | Smith | Mark | M | MN | US | 4 | Beaverhead 100k 2020 (19 hours) |
| 101793 | Smith | Matt | M | TX | US | 4 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109951 | Smith | Matthew | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105596 | Smith | Mike | M | NM | US | 2 | Bighorn 100m 2021 (Finisher) |
| 101541 | Smith | Miriam | F | NV | US | 16 | Quicksilver 100k 2021 (16 hours) |
| 110347 | Smith | Mosi | M | OR | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 105117 | Smith | Nate | M | TX | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 109753 | Smith | Nathan | M | Oregon | US | 1 | Waldo 100k 2021 (17 hours) |
| 110778 | Smith | Nick | M | West Yorkshire | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 110546 | Smith | Oliver | M | East Sussex | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 103677 | Smith | Pam | F | OR | US | 4 | Canal Corridor 100 100m 2021 (Finisher) |
| 109287 | Smith | Ryan | M | CO | US | 1 | Hardrock 100m 2021 (Finisher) |
| 101779 | Smith | Shawn | M | UT | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 109313 | Smith | Steve | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108291 | Smith | Steven | M | Kentucky | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108181 | Smith-Horn | Suzanna | F | VT | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 100581 | Smithberger | Jay | M | OH | US | 1 | Western States 100m 2021 (Finisher) |
| 104975 | Smyth | Megan | F | TX | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107890 | Snee | Tim | M | NJ | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 103603 | Snepste | Janis | M | LVA | LV | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105325 | Snitker | Anthony | M | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 109694 | Snochowski | Jacob | M | Cumbria | GB | 1 | Autumn 100m 2021 (Finisher) |
| 110075 | Snow | Jerry | M | Arizona | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105855 | Snow Canada | Spenser | M | UT | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 105047 | Snyder | Scott | M | KS | US | 8 | Never Summer 103k 2020 (23 hours) |
| 104293 | Snyder | Stephen | M | OR | US | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107053 | Snyders | Greg | M | 32 | Cascade Crest 100m 2021 (Finisher) | ||
| 107842 | Soccol | Manuela | F | Limburg | BE | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 102407 | Soderlund | Emil | M | FIN | FI | 32 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100906 | Soekianto | Erwin | M | IDN | ID | 2 | Canyons, The 100k 2021 (19 hours) |
| 107176 | Sokolovskyy | Dmytro | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 101907 | Soles | Gillian | F | CA | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 104004 | Solis | Adelaido | M | CA | US | 16 | Castle Peak 100k 2021 (21 hours) |
| 110122 | Solodsky | Andrei | M | NJ | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 109512 | Solomon | Carl | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107788 | Solomon | James | M | Illinois | US | 1 | Mohican 100m 2021 (Finisher) |
| 107178 | Solorzano Perez | Carlos | M | Cordoba | ES | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108520 | SOLUM | DEREK | M | NC | US | 1 | Bighorn 100m 2021 (Finisher) |
| 109923 | Solvang | Bo Casper Brinkmann | M | Nordjylland | DK | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107701 | Somers | Steven | M | UT | US | 1 | Bear, The 100m 2020 (Finisher) |
| 110502 | Sommerville | Matthew | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102241 | Somnhot | Panya | M | OR | US | 1 | Western States 100m 2021 (Finisher) |
| 101267 | Sondergaard | Flemming | M | SK | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 109872 | Song | Beatrice | F | OR | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102848 | Song | Qi | F | CA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 109355 | Sophie | Le gonidec | F | Bretagne | US | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 110039 | Sopky | Bernard | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 100950 | Sorensen | Christian | M | UT | US | 16 | Bear, The 100m 2021 (Finisher) |
| 102410 | Sorenson | Steve | M | MN | US | 2 | IMTUF 100m 2021 (Finisher) |
| 105211 | Soriano | Franco | M | CA | US | 32 | Bear, The 100m 2021 (Finisher) |
| 107627 | Soriano Guerrero | Pedro | M | Barcelona | US | 1 | Tor des Géants 330k 2021 (132 hours) |
| 103499 | Sorrento | Leanne | F | MA | US | 16 | Burning River 100m 2021 (Finisher) |
| 104093 | Soryte | Julija | F | OR | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 107497 | sosa | jose | M | california | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107998 | Soucy | Jean-Francois | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108861 | Soudant | Xander | M | Utrecht | NL | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 110906 | Soudunsaari | Jaakko | M | Lappi | FI | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100654 | Soukup | David | M | MN | US | 8 | Mountain Lakes 100m 2021 (Finisher) |
| 104776 | Soule | Ryan | M | MN | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 103266 | Sousa | Nile | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 107055 | Sousa | Pedro | M | 4 | Trail de Conímbriga Terras de Sicó 111k 2021 (24 hours) | ||
| 100366 | Southers | Jessica | F | KY | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 104531 | Sowa | Angie | F | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 108770 | Sørås | Gunnhild | F | Oslo | NO | 1 | Hong Kong 100K 100k 2020 (23 hours) |
| 102323 | Spagnol | Remo | M | TX | US | 2 | Moab 240 238m 2021 (102 hours) |
| 104541 | Spakowicz | Dan | M | OH | US | 8 | Grindstone 100m 2021 (Finisher) |
| 100883 | Spalek | Viktor | M | CA | US | 8 | Castle Peak 100k 2021 (21 hours) |
| 107265 | Spanko | Jaroslav | M | Slovakia | SK | 1 | Ponitrianska 105k 2020 (24 hours) |
| 108391 | Sparks | Sidney | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 110448 | Spaulding | Jack | M | Ma | US | 1 | Worlds End 100k 2020 (19 hours) |
| 108569 | spaulding | rachel | F | Virginia | US | 1 | Hellgate 100k 2019 (17 hours) |
| 102555 | Spaulding | Tim | M | VA | US | 1 | Western States 100m 2021 (Finisher) |
| 105042 | Spearin | Dan | M | VA | US | 1 | Western States 100m 2021 (Finisher) |
| 110198 | Spears | ANGELA | F | TX | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107056 | Specht | Mikolaj | M | 2 | Istria 168k 2021 (Finisher) | ||
| 107467 | Speicher | Dan | M | Pa | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 110253 | Speidel | Susan | F | AZ | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107057 | Speirs | Chad | M | 4 | Leadville Trail 100m 2021 (Finisher) | ||
| 103743 | Spencer | Jeff | M | AR | US | 8 | Zion 100k 2020 (19 hours) |
| 107524 | Spencer | Luke | M | Bristol | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 107642 | Spencer | Patrick | M | Alabama | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 105169 | Sperry | Megan | F | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 105849 | Spice | Brian | M | IN | US | 2 | Never Summer 103k 2020 (23 hours) |
| 108475 | Spieker | Fabrice | M | Thuringia | DE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 107330 | Spieker | Meghan | F | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107714 | Spike | Taylor | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 101521 | Spinosa | Rob | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 109388 | Spitler | Kassandra | F | Rhode Island | US | 1 | Worlds End 100k 2020 (19 hours) |
| 108203 | Spooner | Jamie | F | Florida | US | 1 | Long Haul 100m 2021 (Finisher) |
| 108035 | Spriggs | Shawn | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 102550 | Springer | Jarron | M | TN | US | 4 | Yeti 100m 2020 (Finisher) |
| 107719 | Springer | Jian | F | CA | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 109953 | Squire | Charles | M | NY | US | 1 | Rim to River 100m 2021 (Finisher) |
| 108762 | St John | Jon | M | UT | US | 1 | Bear, The 100m 2020 (Finisher) |
| 102643 | St Julian | Chase | M | AB | CA | 2 | Lost Soul Ultra 100k 2021 (21 hours) |
| 106575 | St Laurent | Alissa | F | AB | CA | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 100278 | St. Amand | Jennifer | F | MN | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 109173 | St. Jean | Christopher | M | NH | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109682 | Staats | Wayne | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 110297 | Stacy | Aaron | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 102292 | Stadelman | Dennis | M | NY | US | 2 | Rim to River 100m 2021 (Finisher) |
| 107240 | Stadelmann | Cédric | M | Valais | CH | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110477 | Staffeldt | Sarah | F | Ut | US | 1 | Never Summer 103k 2021 (23 hours) |
| 109238 | Stafford | Nicole | F | CO | US | 1 | Zion 100m 2021 (Finisher) |
| 104743 | Stagg | Antony | M | GBR | GB | 4 | Race to the Stones 100k 2021 (17 hours) |
| 101672 | Stahala | Martin | M | DEU | DE | 8 | Transgrancanaria 125k 2021 (28 hours) |
| 107059 | Stahl | Craig | M | 4 | Bear, The 100m 2020 (Finisher) | ||
| 110368 | Ståhlkloo | Anna | F | Dalarna | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 103326 | Staker | Marcus | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107269 | Stallings | Brett | M | IN | US | 1 | Hennepin 100m 2021 (Finisher) |
| 103261 | Stalnaker | Wendy | F | CO | US | 8 | Never Summer 103k 2020 (23 hours) |
| 108216 | Stamm | Elizabeth | F | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 104392 | Standring | Brett | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 106249 | Stanford | Sean | M | VA | US | 4 | Grindstone 100m 2021 (Finisher) |
| 101652 | Stanley | Andrew | M | NZL | NZ | 4 | Tarawera 100M 100m 2021 (30 hours) |
| 100938 | Stanley | Phyllis | F | WA | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 108526 | Stanley | Richard | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103119 | Stantiall | Neil | M | GBR | GB | 2 | Autumn 100m 2021 (Finisher) |
| 107508 | Starbuck | Ryan | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 110726 | Starck | Shaun | M | Western Cape | ZA | 1 | SkyRun 100k 2019 (28 hours) |
| 110869 | Starck | Tammy | F | Western cape | ZA | 1 | SkyRun 100k 2019 (28 hours) |
| 107961 | Stark | Angela | F | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 102473 | Stark | Jürgen | M | DEU | DE | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103331 | Stark | Kimberley | F | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 109016 | Starodaj | Tom | M | CT | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 108208 | Stasulli | John | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109567 | Stauffer | Carl | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 108725 | Stavik | Jaroslav | M | Česká republika | CZ | 1 | Stefanik Trail 145k 2021 (32 hours) |
| 101495 | Steele | Dean | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107060 | Steele | Tim | M | CA | US | 16 | Hennepin 100m 2021 (Finisher) |
| 110440 | Steen | Mikko | M | Helsinki | FI | 1 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 103504 | Steen | Vagn | M | OH | US | 1 | Western States 100m 2021 (Finisher) |
| 110539 | Stegailo | Artem | M | IL | US | 1 | Zion 100k 2020 (19 hours) |
| 107688 | stegen | kevin | M | AL | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 102161 | Steger | Robert | M | CO | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 100289 | Stegura | Michael | M | PA | US | 1 | Burning River 100m 2020 (Finisher) |
| 104616 | Steigmeyer | Zak | M | CA | US | 4 | Cascade Crest 100m 2021 (Finisher) |
| 105227 | Steinberg | Brian | M | MI | US | 32 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 105201 | Steinberg | Jason | M | CO | US | 4 | Bighorn 100m 2021 (Finisher) |
| 105365 | Steinhauser | Maria | F | CA | US | 8 | Run Rabbit Run 100m 2021 (Finisher) |
| 107917 | Steinhibel | Jon | M | MN | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 103738 | Steinmeister | Martin | M | DEU | DE | 2 | Istria 168k 2021 (Finisher) |
| 110665 | Stelmach | Dominika | F | mazowieckie | PL | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 108515 | Stemberger | Andreas | M | Niederösterreich | AT | 1 | Istria 168k 2021 (Finisher) |
| 110808 | Stenbom | Tobbe | M | Gotland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 109283 | Stenger | David | M | KY | US | 1 | Long Haul 100m 2021 (Finisher) |
| 104396 | Stenger | Shannon | M | NE | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 109658 | Stengle-Håkonsen | Marius | M | Nittedal | NO | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 102607 | Stenner | Christian | M | AB | CA | 16 | Canadian Death Race 125k 2021 (24 hours) |
| 100230 | Stenning | Oliver | M | GBR | GB | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 103298 | Stephen | Barbie | F | KS | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 109765 | Stephenson | Kevin | M | GA | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 107702 | Stepp | Stu | M | NC | US | 1 | Indiana 100m 2021 (Finisher) |
| 108059 | Sterba | Robert | M | Fl | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108320 | Sterling | Barry | M | TX | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 104504 | Stern | Jeffrey | M | CA | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 100982 | Steurer | Steffen | M | AUT | AT | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107737 | Stevens | Bryan | M | AZ | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102202 | Stevens | Renee | F | AZ | US | 16 | Cuyamaca 100k 2021 (17 hours) |
| 107561 | Stevens | Stephanie | F | MI | US | 1 | Indiana 100m 2021 (Finisher) |
| 108487 | Stewart | Craig | M | Gauteng | ZA | 1 | SkyRun 100k 2020 (28 hours) |
| 100736 | Stewart | Doug | M | FRA | FR | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109128 | Stewart | Geordie | M | Hampshire | GB | 1 | North Downs Way 100m 2021 (Finisher) |
| 110389 | Stewart | James | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 107993 | Stewart | James | M | Kansas | US | 1 | Never Summer 103k 2020 (23 hours) |
| 108717 | Stewart | Jeff | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 108649 | Stewart | Kevin | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 110901 | Stewart | Megan | F | California | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107965 | Stewart | Shaun | M | Donegal | IE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107063 | Stichman | Tad | M | MT | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 108582 | Stiffarm | Eric | M | Montana | US | 1 | Bighorn 100m 2021 (Finisher) |
| 107319 | Stimac | Samantha | F | WI | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108378 | Stiso | Suzi | F | TAS | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 105827 | Stith | Scott | M | MO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 109021 | Stitt | Corinna | F | PA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 110007 | Stitt | Thomas | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 107470 | Stoddard | Johnny | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 107835 | Stommes | Mitchell | M | United States of America | US | 1 | Never Summer 103k 2021 (23 hours) |
| 102633 | Stone | Mark | M | AUS | AU | 16 | Blackall 100K 100k 2021 (18 hours) |
| 109663 | Stoner | Donald | M | FL | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109521 | Storm | Julieann | F | Ca | US | 1 | Bryce 100m 2021 (Finisher) |
| 103683 | Stougaard | Bent | M | DNK | DK | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 106063 | Stoyanov | Elvis | M | BGR | BG | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105797 | Strachan | Darren | M | GBR | GB | 4 | Thames Path 100 100m 2021 (Finisher) |
| 101138 | Strack | Jonathan | M | CA | US | 16 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 105242 | Strahorn | James | M | OK | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107405 | Stratman | Stephen | M | Colorado | US | 1 | Indiana 100m 2021 (Finisher) |
| 101373 | Straw | Keith | M | PA | US | 4 | Burning River 100m 2021 (Finisher) |
| 103795 | Strickland | Peter | M | GA | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 104417 | Stringer | Scott | M | SC | US | 2 | Tunnel Hill 100m 2020 (Finisher) |
| 101714 | Stringham | Jennifer | F | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 105363 | Stroh | Nathan | M | OR | US | 1 | Western States 100m 2021 (Finisher) |
| 107067 | Stromberg | Scott | M | NM | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 100078 | Strong | Jonathan | M | GBR | GB | 32 | Thames Path 100 100m 2020 (Finisher) |
| 107745 | Strong | Sarah | F | CO | US | 1 | Bryce 100m 2021 (Finisher) |
| 101571 | Strope | Kris | M | AL | US | 4 | Grindstone 100m 2021 (Finisher) |
| 108306 | Stroud | Aaron | M | NC | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 108193 | Stroud | Robert | M | SC | US | 1 | Zion 100k 2021 (19 hours) |
| 102362 | Strouse | Joel | M | PA | US | 8 | Worlds End 100k 2021 (19 hours) |
| 110202 | Struck | Dalton | M | UT | US | 1 | Superior 100 100m 2021 (Finisher) |
| 101294 | Struck | Jared | M | AL | US | 32 | Long Haul 100m 2020 (Finisher) |
| 104911 | Struck | Scott | M | MI | US | 2 | Long Haul 100m 2021 (Finisher) |
| 105320 | Strutko | Helene | F | PA | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 100070 | Stuart | David | M | GBR | GB | 32 | Lakeland 100m 2021 (Finisher) |
| 109856 | Stuart | Rory | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 107569 | Studebaker | John | M | TX | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 101152 | Study | Matthew | M | OH | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 104043 | Stugard | Mark | M | GA | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 107460 | Stummvoll | Alexander | M | Baden-Württemberg | DE | 1 | Swiss Alps 100k 100k 2021 (22 hours) |
| 101190 | Styer | Andrew | M | PA | US | 2 | Worlds End 100k 2020 (19 hours) |
| 106193 | Stypula | Elaine | F | MI | US | 8 | Arkansas Traveler 100m 2021 (Finisher) |
| 100231 | Su | Allan | M | CA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 103858 | Subbaraman | Ram | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110450 | Suckling | Jonni | M | Wiltshire | US | 1 | Autumn 100m 2021 (Finisher) |
| 109747 | Sudak | Gwendolyn | F | PA | US | 1 | Burning River 100m 2021 (Finisher) |
| 108698 | Suflita | Paul | M | NY | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 100268 | Sugianto | Rini | F | IDN | ID | 8 | Mountain Lakes 100m 2021 (Finisher) |
| 107847 | Suhr | Timothy | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 110735 | Sullivan | Brandon | M | TN | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 107807 | Sullivan | David | M | GA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108255 | Sullivan | Laura | F | Virginia | US | 1 | Hellgate 100k 2020 (17 hours) |
| 109995 | Sullivan | Mandy | F | WV | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 107950 | SULLIVAN | Nigel | M | Buckinghamshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 107946 | Sullivan | Todd | M | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 108680 | Summerfield | Jason | M | Florida | US | 1 | Mohican 100m 2021 (Finisher) |
| 109308 | Summerford | Helen | F | MS | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 100670 | Summers | Andrew | M | PA | US | 32 | Grindstone 100m 2021 (Finisher) |
| 105607 | Sun | Joshua | M | IA | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 105193 | Sundahl | Scott | M | CO | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 107443 | Sunder | Kaushik | M | CALIFORNIA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100911 | Sundermeier | Ronda | F | OR | US | 2 | Bighorn 100m 2021 (Finisher) |
| 103496 | Suo | Jerry | M | CA | US | 32 | Castle Peak 100k 2021 (21 hours) |
| 109150 | supino | gianluca | M | italy | IT | 1 | Autumn 100m 2021 (Finisher) |
| 108613 | Surakka | Miikka | M | - | FI | 1 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 101068 | Surgent | Peter | M | CO | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 107934 | Surman | Melissa | F | Ohio | US | 1 | Mohican 100m 2020 (Finisher) |
| 110720 | Sušický | Jan | M | ČESKÁ REPUBLIKA | CZ | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 110353 | Suski | Andrew | M | OH | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102497 | Sustersic | Nathan | M | OR | US | 8 | Waldo 100k 2021 (17 hours) |
| 107878 | Sutherland | Ally | M | Aberdeenshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 104068 | Sutherland | Cory | M | WA | US | 16 | Mountain Lakes 100m 2021 (Finisher) |
| 102425 | Suzuki | Hideyuki | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 105780 | Svoboda | Paulina | F | SGP | SG | 2 | Hong Kong 100K 100k 2020 (23 hours) |
| 102618 | Swan | Mike | M | CA | US | 2 | Zion 100k 2020 (19 hours) |
| 110481 | Swanholm | Anthony | M | KY | US | 1 | No Business 100m 2021 (Finisher) |
| 110137 | Swankaert | Thomas | M | Oost-Vlaanderen | BE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 109993 | Swann | HollyAnn | F | WV - West Virginia | US | 1 | Rim to River 100m 2021 (Finisher) |
| 101735 | Swanson | John | M | NJ | US | 2 | Grindstone 100m 2021 (Finisher) |
| 101950 | Swanson | Paul | M | WA | US | 4 | Zion 100k 2021 (19 hours) |
| 100281 | Swart | Jaco | M | GBR | GB | 2 | Autumn 100m 2020 (Finisher) |
| 100296 | Swartzlender | Jeremiah | M | FL | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 107968 | Swavely | Meghan | F | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109199 | Swayne | Josh | M | NV | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108146 | Swearingen | Christy | F | MO | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 102809 | Swearingen | Gary | M | MO | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 107919 | Sweeney | Jesse | M | Mi | US | 1 | Bear, The 100m 2020 (Finisher) |
| 105982 | Sweeney | Jim | M | NY | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 109212 | sweeney | Steven | M | NY | US | 1 | Laurel Highlands 70.5m 2020 (20 hours) |
| 107536 | SWEET | MATTHEW | M | WI | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 109733 | Swenson | Laura | F | AZ | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105109 | Swiontek | Matt | M | MI | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 109002 | Swope | Conlan | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 108626 | Sword | Philip | M | WV | US | 1 | Yeti 100m 2020 (Finisher) |
| 105277 | Swyers | Brenton | M | VA | US | 32 | Yeti 100m 2021 (Finisher) |
| 106176 | Sylte | Maria | F | TX | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 103129 | Syse | Bjorn | M | FL | US | 2 | Long Haul 100m 2021 (Finisher) |
| 104227 | Szczotka | Pawel | M | POL | PL | 8 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104977 | Szymoniak | Brett | M | OR | US | 4 | Mountain Lakes 100m 2021 (Finisher) |
| 108956 | SZYSZKOWSKI | Rafal | M | Polska | PL | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 102692 | Tabbernor | David | M | MB | CA | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105559 | Tabelev | Oleg | M | AB | CA | 16 | Lost Soul Ultra 100k 2021 (21 hours) |
| 107645 | Tacker | Daniel | M | Texas | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107073 | Tadt | Eric | M | MN | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107175 | Tagalog | Sylvio | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 102831 | Takahashi | Nobuya | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 104676 | Takano | Hideo | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 106225 | Takeda | Nobuyori | M | NJ | US | 32 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105153 | Talbott | Shawn | M | UT | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 106231 | Talhelm | Alan | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 109762 | Tallis | Matthew | M | Queensland | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102263 | Tally | Steven | M | CA | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 102696 | Talukdar | Bipul | M | CA | US | 2 | Moab 240 238m 2021 (102 hours) |
| 107248 | tampe | stefan | M | NV | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 107106 | Tan | Natacha | F | NSW | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 104486 | Tanaka | Hiroyasu | M | JPN | JP | 16 | Wasatch Front 100m 2021 (Finisher) |
| 105328 | Tanaka | Keisuke | M | JPN | JP | 8 | Wasatch Front 100m 2021 (Finisher) |
| 107202 | Tang | Jian | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 110504 | Tangney | James | M | California | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109834 | Tanner | Dylan | M | Ohio | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 103162 | Tanner | Jon | M | Colorado | US | 16 | Never Summer 103k 2021 (23 hours) |
| 107723 | Tanner | Matt | M | Arizona | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 110001 | Tapia | Rene Christian | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 104204 | Tardif | Jonathan | M | QC | CA | 4 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109149 | Tardivel | Bruno | M | Alsace | FR | 1 | Grand Raid La Reunion 162k 2021 (50 hours) |
| 103991 | Tarutin | Nikita | M | RUS | RU | 2 | Golden Ring 100K 100k 2020 (18 hours) |
| 108849 | Tau | Nonhlakanipho | F | Gauteng | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 101412 | Tavan | Noel | M | OR | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 104202 | Taylor | Andrew | M | WA | US | 2 | Bear, The 100m 2021 (Finisher) |
| 109877 | Taylor | Andrew | M | California | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108167 | Taylor | Bernadette | F | NJ | US | 1 | Umstead 100m 2021 (Finisher) |
| 108470 | Taylor | Chris | M | Leicestershire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 100186 | Taylor | David Ernest | M | AUS | AU | 16 | Blackall 100K 100k 2020 (18 hours) |
| 109897 | Taylor | Jack | M | Wrexham | GB | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 106304 | Taylor | Jake | M | IA | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 110509 | Taylor | James | M | Auckland | NZ | 1 | Tarawera 100K 102k 2021 (17 hours) |
| 104996 | Taylor | Jeffrey | M | NH | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 109474 | Taylor | Leslie | F | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 104292 | Taylor | Mark | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 108385 | Taylor | Matthew | M | TX | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 106137 | Taylor | Neal | M | CO | US | 4 | Hardrock 100m 2021 (Finisher) |
| 107516 | Taylor | Nick | M | AZ | US | 1 | Bear, The 100m 2021 (Finisher) |
| 109511 | Taylor | Randall | M | Missouri | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 109265 | Taylor | Ricky | M | Qld | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 104974 | Taylor | Ryan | M | PA | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 110438 | Taylor | Struan | M | KwaZulu-Natal | ZA | 1 | SkyRun 100k 2020 (28 hours) |
| 101503 | Taylor | Stuart | M | CA | US | 2 | Sean O'Brien 100k 2020 (16 hours) |
| 102693 | Taylor | Wing | M | BC | CA | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 107185 | Tayra | Sergio | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 104841 | Teas | George | M | VA | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 100021 | Tebbenham | Andrew | M | GBR | GB | 2 | North Downs Way 100m 2021 (Finisher) |
| 109890 | Tedaldi | Gian Marco | M | Italy | IT | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 105979 | Tedesco | Carl | M | CA | US | 2 | Cuyamaca 100k 2021 (17 hours) |
| 107392 | Teege | Tim | M | Hamburg | DE | 1 | Mozart 100 108k 2021 (22 hours) |
| 107962 | Teklai | Rahwa | F | Pa | US | 1 | Worlds End 100k 2021 (19 hours) |
| 110187 | TEMPLE | RACHEL | F | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 109553 | Ten | Jorge | M | Spain | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 107991 | Teo | Alan | M | OR | US | 1 | IMTUF 100m 2021 (Finisher) |
| 104591 | Teragawa | Shane | M | CA | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 108627 | Ternes | Paul | M | MD | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 108237 | Terry | Kevin | M | Wisconsin | US | 1 | Superior 100 100m 2021 (Finisher) |
| 107682 | Terzi | Angela | F | Attica | GR | 1 | Olympus Mythical Trail 100k 2020 (28 hours) |
| 101840 | Tetreault | Myron | M | AB | CA | 32 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110105 | Thai | Haa Cheng | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 103759 | Tharp | Josiah | M | CO | US | 4 | Bear, The 100m 2020 (Finisher) |
| 110349 | Thenaisie | Mathias | M | Bretagne | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 101808 | Thenot | Philippe | M | GA | US | 1 | Western States 100m 2021 (Finisher) |
| 107804 | Thewes | Mika | F | Colorado | US | 1 | Bigfoot 206m 2021 (85 hours) |
| 103431 | Thewissen | Thomas | M | BEL | BE | 2 | Bryce 100m 2021 (Finisher) |
| 109249 | Thibodeaux | Brett | M | TX | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 108060 | Thieme | Matthew | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 103157 | Thiessen | Patrick | M | CO | US | 16 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104788 | Thill | Mark | M | IN | US | 8 | Bear, The 100m 2020 (Finisher) |
| 105846 | Thirkill | Shelby | F | CA | US | 4 | Cuyamaca 100k 2021 (17 hours) |
| 102298 | Thivierge | Casey | M | ON | CA | 32 | Quebec Mega Trail 100m 2021 (Finisher) |
| 108422 | Thoburn | Chris | M | Ca | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 105330 | Thomas | Alexis | F | VA | US | 128 | Hellgate 100k 2020 (17 hours) |
| 109028 | Thomas | Chelsie | F | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 107299 | Thomas | Chris | M | KY | US | 1 | No Business 100m 2021 (Finisher) |
| 101022 | Thomas | Christopher | M | NV | US | 16 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 105311 | Thomas | Ed | M | SD | US | 2 | Never Summer 103k 2021 (23 hours) |
| 104913 | Thomas | Gethin | M | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 101051 | Thomas | Hilary | F | AB | CA | 16 | Lost Soul Ultra 100k 2021 (21 hours) |
| 102897 | Thomas | Joshua | M | VA | US | 2 | Hellgate 100k 2020 (17 hours) |
| 107343 | thomas | luke | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 104435 | Thomas | Preston | M | PA | US | 8 | Worlds End 100k 2021 (19 hours) |
| 107195 | Thome | Brandy | F | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 108190 | Thompson | Aaron | M | NH | US | 1 | Yeti 100m 2021 (Finisher) |
| 108073 | Thompson | Anneke | F | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 103412 | Thompson | Bill | M | PA | US | 8 | Burning River 100m 2021 (Finisher) |
| 108513 | Thompson | Craig | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 110470 | Thompson | Deanna | F | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108241 | Thompson | Jake | M | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 107453 | Thompson | Jeff | M | AZ | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 109859 | Thompson | Joel | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110696 | Thompson | Katie | F | West Virginia | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106619 | Thompson | Kayla | F | PA | US | 2 | Pinhoti 100m 2021 (Finisher) |
| 107684 | Thompson | Lauren | F | Colorado | US | 1 | Never Summer 103k 2021 (23 hours) |
| 103605 | Thompson | Matthew | M | AUS | AU | 4 | Surf Coast Century 100k 2020 (16 hours) |
| 107615 | Thompson | Michele | F | Iowa | US | 1 | No Business 100m 2021 (Finisher) |
| 107337 | Thompson | Paul | M | Ohio | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 110317 | Thompson | Rebecca | F | Mo | US | 1 | Never Summer 103k 2021 (23 hours) |
| 110231 | Thompson | Sally | F | KY | US | 1 | Rim to River 100m 2021 (Finisher) |
| 102557 | Thompson | Skye | M | CA | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 107078 | Thompson | Steve | M | 4 | Grindstone 100m 2021 (Finisher) | ||
| 104764 | Thoms | Don | M | NE | US | 4 | Sean O'Brien 100k 2020 (16 hours) |
| 103394 | Thomsen | Scott | M | CA | US | 8 | Mountain Lakes 100m 2021 (Finisher) |
| 101366 | Thomson | Eric | M | VA | US | 16 | Yeti 100m 2021 (Finisher) |
| 107717 | Thor | Philip | M | Stockholm | SE | 1 | Täby Extreme Challenge 100 100m 2021 (Finisher) |
| 110898 | THORESON | LUKE | M | MN | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 102094 | Thorley | Jared | M | UT | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 108374 | Thorn | Caitlin | F | Al | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 107888 | Thorn | Luke | M | Berkshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 100629 | Thornton | Jake | M | AL | US | 32 | Beaverhead 100k 2020 (19 hours) |
| 109837 | Thornton-Swan | Hector | M | Greater London | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 101488 | Thorpe | Andrea | F | WA | US | 64 | Waldo 100k 2021 (17 hours) |
| 103399 | Thorpe | Chris | M | NV | US | 32 | Black Canyon 100k 2020 (17 hours) |
| 103953 | Thorpe | Ryan | M | NJ | US | 16 | Grindstone 100m 2021 (Finisher) |
| 101765 | Thorvaldsson | Peter | M | SWE | SE | 8 | Mozart 100 108k 2021 (22 hours) |
| 110617 | Thouin | John | U | MD | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110112 | Thouin | John | M | MD | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109977 | Throne | Jonathan | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 103036 | Throp | Jo | F | NZL | NZ | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 104400 | Thrune | Barry | M | WI | US | 4 | Tunnel Hill 100m 2019 (Finisher) |
| 109284 | Thuresson | Martin | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 103816 | Tidd | Bill | M | NH | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 105970 | Tidd | Brianna | F | UT | US | 2 | Leadville Trail 100m 2021 (Finisher) |
| 104869 | Tidd | John | M | URY | UY | 4 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 102433 | Tiedens | Mark | M | CA | US | 32 | Hardrock 100m 2021 (Finisher) |
| 100187 | Tiemann | Max | M | NC | US | 4 | No Business 100m 2021 (Finisher) |
| 107481 | Tien | David | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108406 | Tieri | Angela | F | OR | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108866 | Tiffany | Kevin | M | IA | US | 1 | Bryce 100m 2021 (Finisher) |
| 108778 | Tiili | Jonne | M | - | SE | 1 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 109473 | Tiislär | Kaupo | M | Harjumaa (Tallinn) | EE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110120 | Timbrell | Scott | M | NSW | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 105334 | Timme | Ryan | M | UT | US | 2 | Bryce 100m 2021 (Finisher) |
| 109589 | Timmerman | Auke | M | Utrecht | NL | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 102207 | Timmerman | Brad | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 106514 | Timuralp | Budak | M | TUR | TR | 2 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 108083 | Tinch | Lee | M | TN | US | 1 | No Business 100m 2021 (Finisher) |
| 109375 | Tiner | Jeremy | M | AR | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 105097 | Tintes | Jason | M | MN | US | 4 | Superior 100 100m 2021 (Finisher) |
| 105276 | Tinucci | Jack | M | CO | US | 16 | IMTUF 100m 2021 (Finisher) |
| 107200 | Tippets | Carl | U | ut | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 107081 | Tirey | Christopher | M | 8 | HOKA Bandera 100k 2021 (17 hours) | ||
| 102460 | Tkaczyk | Rafal | M | GBR | GB | 4 | Autumn 100m 2021 (Finisher) |
| 107637 | Tobolske-Horn | Loretta | F | MI | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 108157 | Todd | Alexa | F | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 110129 | Todd | Amber | F | Ca | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108537 | Todd | Claire | F | Pennsylvania | US | 1 | Yeti 100m 2021 (Finisher) |
| 102276 | Todd | Kenneth | M | NC | US | 4 | Indiana 100m 2021 (Finisher) |
| 108280 | Toft | Andreas | M | Taipei | TW | 1 | Formosa Trail 104k 2020 (28 hours) |
| 107903 | Tolstrup | Simon | M | Vic | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 107913 | Toma | Lukas | M | Tirol | AT | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 108614 | Tomal | Sarah | F | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 101208 | Tomey | Jeff | M | GA | US | 4 | Pinhoti 100m 2021 (Finisher) |
| 102914 | Tomford | Christoph | M | TX | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 107749 | Tomlinson | Sam | M | London | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 109869 | Tompsett | Kevin | M | NY | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 105081 | Ton | Steve | M | TX | US | 2 | HOKA Bandera 100k 2021 (17 hours) |
| 107773 | Töngi | Daniel | M | Luzern | CH | 1 | Swiss Alps 100k 100k 2021 (22 hours) |
| 110420 | Toomey | Cameron | M | Auckland | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 110530 | Toomey | Craig | M | Queensland | AU | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 107969 | Tootell | Simon | M | Northamptonshire | GB | 1 | Hong Kong 100K 100k 2020 (23 hours) |
| 107620 | Topcu | Mert | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 108311 | Topete Jr | Jesus | M | California | US | 1 | Bryce 100m 2021 (Finisher) |
| 110585 | topolnisky | oliver | M | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 103718 | Topping | Chelsey | F | AB | CA | 32 | HURT 100m 2020 (Finisher) |
| 109218 | Toribio | Felipe | M | NY | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107855 | Torkelson | Cory | M | TX | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 106015 | Torres | Adrian | M | CA | US | 2 | Bryce 100m 2020 (Finisher) |
| 101335 | Torres | Cindylee | F | IL | US | 8 | Indiana 100m 2021 (Finisher) |
| 105576 | Toscano | John | M | NH | US | 8 | Eastern States 100m 2021 (Finisher) |
| 108444 | Tostee | Angelique | F | New South Wales | AU | 1 | Tarawera 100K 102k 2020 (17 hours) |
| 109098 | TOULEMONT | Christian | M | Aquitaine | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 109414 | Toupin | Marc-Olivier | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 106272 | Towell | Nicholas | M | GBR | GB | 8 | Autumn 100m 2021 (Finisher) |
| 107082 | Towle | Scott | M | Tx | US | 64 | HOKA Bandera 100k 2020 (17 hours) |
| 110707 | Townsend | Aaron | M | VA | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 108572 | Townsend | Laura | F | Alberta | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108139 | Townsley | Josh | M | OR | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 107283 | Toy | Brian | M | AL | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109046 | Toyer | Laurence | M | NC | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 109180 | Tracey | Dan | M | Hampshire | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 103059 | Trach | Roman | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 108435 | Traer | Scott | M | MA | US | 1 | Umstead 100m 2021 (Finisher) |
| 103138 | Tramleasure | Steve | M | ID | US | 2 | Bryce 100m 2021 (Finisher) |
| 108240 | Tran | David | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108185 | Tran | Phillip | U | California | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 108292 | Tranqui | Phil | M | AL | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 110725 | Trask | Mike | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 109356 | Travers | Jean-Michel | M | Berlin | DE | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 107731 | Traynor | Adam | M | WI | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109217 | Tremblay | François-Michel | M | Quebec | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 108889 | Tremps | Claudia | F | Catalunya | ES | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 107433 | Trenkamp | Scott | U | Kentucky | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 101560 | Trent | Annie | F | NV | US | 16 | Zion 100k 2021 (19 hours) |
| 101722 | Trent | Katie | F | NV | US | 1 | Western States 100m 2021 (Finisher) |
| 110479 | Tribes | Christophe | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 100666 | Triconnet | Thierry | M | FRA | FR | 2 | Grand Raid des Pyrénées - Tour de Cirques 123k 2021 (40 hours) |
| 107669 | Trierweiler | John | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107671 | Trifari | Chris | M | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 107477 | Trimboli | Brendan | M | CO | US | 1 | Bear, The 100m 2021 (Finisher) |
| 102888 | Trinh | Linda | F | ON | CA | 16 | Black Canyon 100k 2020 (17 hours) |
| 108948 | TRINIDAD | Yves | M | Yonne | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110146 | Triseth | Vegard | M | Viken | NO | 1 | Soria Moria til Verden Ende 100m 2021 (Finisher) |
| 107226 | Trommater | Matt | M | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 108863 | Trowbridge | Misty | U | Pa | US | 1 | Worlds End 100k 2021 (19 hours) |
| 105307 | Troxel | Steve | M | TN | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 107466 | Troyer | Kevin | M | OH | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 107246 | TROYER | LES | M | Ohio | US | 1 | Eastern States 100m 2021 (Finisher) |
| 106375 | Troyer | Randy | M | IN | US | 8 | Bear, The 100m 2021 (Finisher) |
| 105068 | Truan | Ashley | F | MI | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 101298 | Trueblood | Mike | M | CA | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 104468 | Truelove | John | M | IN | US | 1 | Western States 100m 2021 (Finisher) |
| 100613 | Trumbo | Chad | M | OH | US | 4 | Mohican 100m 2021 (Finisher) |
| 104712 | Trundley | Tony | M | GBR | GB | 32 | Autumn 100m 2021 (Finisher) |
| 110161 | Truskog | Andréas | M | Ostergotland | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 107397 | Tsai | I-Tao | M | CA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 102611 | Tsai | Itao | M | CA | US | 2 | Bear, The 100m 2021 (Finisher) |
| 101739 | Tubra | Tim | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 107086 | Tucker | Alexander | M | 4 | Long Haul 100m 2020 (Finisher) | ||
| 107525 | Tucker | Josh | M | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 110344 | Tucker | Kevin | M | PA | US | 1 | Twisted Branch 100k 2021 (19 hours) |
| 109228 | Tucker | Lindsay | F | Washington | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 101296 | Tucker | Melissa | F | OR | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 100642 | Tucker | Stephen | M | PA | US | 8 | Grindstone 100m 2021 (Finisher) |
| 101203 | Tucker | Tim | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 104177 | Tueting | Joshua | M | CO | US | 4 | Superior 100 100m 2021 (Finisher) |
| 107657 | Tumminia | Joe | M | Fl | US | 1 | Long Haul 100m 2020 (Finisher) |
| 104170 | Tunney | Phillip | M | GBR | GB | 16 | Thames Path 100 100m 2020 (Finisher) |
| 103224 | Turley | Richard | M | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 107757 | Turley | Tony | M | Missouri | US | 1 | Bigfoot 206m 2021 (85 hours) |
| 101870 | Turner | Brendan | M | GBR | GB | 4 | North Downs Way 100m 2020 (Finisher) |
| 109373 | Turner | Brian | M | Michigan | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107819 | Turner | David | M | AZ | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 101297 | Turner | Jacob | M | IL | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 107216 | Turner | John | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 107948 | Turner | Levi | M | Victoria | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 101710 | Turner | Mike | M | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 101764 | Turner | Stephen | M | GBR | GB | 4 | Lakeland 100m 2021 (Finisher) |
| 101619 | Tweed | Geoffrey | M | NM | US | 8 | Black Canyon 100k 2021 (17 hours) |
| 107088 | Tweedie | Bruce | M | VA | US | 16 | Mohican 100m 2021 (Finisher) |
| 105939 | Twietmeyer | Matthew | M | CA | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 110268 | Twigg | Charles | M | OH | US | 1 | Mohican 100m 2021 (Finisher) |
| 105868 | Tyler | Lucas | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 100596 | Tyler | Mike | M | OR | US | 8 | Mountain Lakes 100m 2021 (Finisher) |
| 102904 | Tyrrell | Kelly | F | WI | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 107089 | Tyson | Kris | M | 8 | Cruel Jewel 106m 2021 (Finisher) | ||
| 100559 | Ubaldini | Michael | M | AZ | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108858 | Uddgren | Fredrik | M | Sverige | SE | 1 | Kullamannen 100m 2021 (Finisher) |
| 110037 | ughetto | luca | M | piemonte | IT | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 105593 | Uhan | Callie | F | OR | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 110817 | Ulatowski | Andrzej | M | kujawsko-pomorskie | PL | 1 | Łemkowyna Ultra-Trail 150k 2021 (Finisher) |
| 108342 | Ulm | Rob | M | IL | US | 1 | Hardrock 100m 2021 (Finisher) |
| 110570 | Ulrey | Andrew | M | OH | US | 1 | Zion 100m 2021 (Finisher) |
| 102865 | Ulrich | Lindsey | F | OR | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 110798 | Ung | Ryan | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104757 | Ung | Tek | F | RI | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 107277 | Urbaczka | Matěj | M | Czech Republic | CZ | 1 | Istria 128k 2021 (28 hours) |
| 104183 | Urbaník | Martin | M | SVK | SK | 32 | Ponitrianska 105k 2021 (24 hours) |
| 108355 | Urbanek | David | M | IL | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101049 | Urbanski | Jeffrey | M | CO | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 101712 | Urbanski | Matthew | M | CO | US | 16 | Tarawera 100M 100m 2021 (30 hours) |
| 109537 | Urbin | Nicolas | M | VIC | AU | 1 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 110315 | Urbina | Luis | M | Hidalgo | MX | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 101567 | Ureta | Pablo | M | ARG | AR | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103204 | Urken | Steven | M | GA | US | 2 | Black Canyon 100k 2021 (17 hours) |
| 108806 | Urrea | Noel | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107090 | Urschel | Casey | M | 16 | Long Haul 100m 2020 (Finisher) | ||
| 107091 | Vacalis | John | M | 8 | HOKA Bandera 100k 2021 (17 hours) | ||
| 110472 | Vaillancourt | Béatrice | F | Qc | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 110009 | Vaillancourt | Marc | M | BC | CA | 1 | Ultra-Trail Harricana 125k 2021 (26 hours) |
| 109757 | Valdez | Vincent | M | TN | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 106461 | Vale | Greg | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102162 | Valenzona | Damon | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110006 | VALERO ALARCON | GABRIEL | M | VALENCIA | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 102363 | Valinsky-Fillipow | Amelia | F | CA | US | 64 | Javelina Jundred 100m 2021 (Finisher) |
| 101410 | Valites | Mark | M | NY | US | 16 | Worlds End 100k 2020 (19 hours) |
| 101069 | Vallon-Christersson | Johan | M | SWE | SE | 2 | Kullamannen 100m 2021 (Finisher) |
| 107738 | Van Dalsem | Matt | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108743 | Van de Vyver | Adrian | M | Eastern Cape | ZA | 1 | SkyRun 100k 2020 (28 hours) |
| 108805 | van den Berg | Caitlin | F | western cape | ZA | 1 | Bear, The 100m 2020 (Finisher) |
| 109954 | van den Boogaart | Monique | F | California | US | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 100500 | Van den Broeck | Tim | M | BEL | BE | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 104930 | Van Der Heijden | Peter | M | NLD | NL | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 103340 | Van Dusen | Randy | M | CA | US | 8 | Rio Del Lago 100m 2021 (Finisher) |
| 101821 | Van Ekris | John | M | PE | CA | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 107502 | Van Hemelryk | Blair | M | WI | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 107511 | Van Horn | Hans | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 101761 | Van Metre | Marya | F | OR | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 107929 | Van Oosten | Joel | M | VIC | AU | 1 | Surf Coast Century 100k 2020 (16 hours) |
| 110063 | Van Rein | Lorena | F | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110257 | Van Sickle | Heather | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 101546 | Van Sloten | Joel | M | WA | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 109209 | Van Stensel | Daniel | M | MI | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 109134 | Van Vossen | Brandy | F | Florida | US | 1 | Long Haul 100m 2020 (Finisher) |
| 107253 | van Wersch | Gonzalo | M | Chile | CL | 1 | Vulcano Ultra-Trail 100k 2019 (24 hours) |
| 109687 | Van Winkle | Kimberly | F | OR | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108469 | Van wyk | Andries | M | Western Cape | ZA | 1 | Karkloof 100m 2021 (Finisher) |
| 105844 | Van Zante | Beau | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 104467 | Van Zanten | Hans | M | MO | US | 8 | HOKA Bandera 100k 2021 (17 hours) |
| 110180 | Vanatta | Thomas | M | CO | US | 1 | Zion 100k 2020 (19 hours) |
| 104816 | Vanderhoof | Brent | M | CA | US | 32 | Zion 100k 2021 (19 hours) |
| 109324 | VanHorn | Jon | M | CA | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 110251 | Vanni | Melissa | F | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110388 | VanZandt | Marie | F | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 108443 | Vardi | Ofir | M | IL | IL | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 109447 | varela | angel | M | California | US | 1 | Zion 100m 2021 (Finisher) |
| 110429 | Vargas | Mireya | F | California | US | 1 | Western States 100m 2021 (Finisher) |
| 107432 | Vargas | Ronald | M | South Carolina | US | 1 | Yeti 100m 2020 (Finisher) |
| 109715 | Varley | Ashley | M | Easy Sussex | US | 1 | Autumn 100m 2021 (Finisher) |
| 109193 | Varnadoe | Chris | M | SC | US | 1 | Yeti 100m 2021 (Finisher) |
| 109018 | Varty | Ed | M | Alberta | US | 1 | Canadian Death Race 125k 2021 (24 hours) |
| 109527 | Vasel | Richard | M | AR | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 107094 | Vasile | Marian | M | North Holland | NL | 8 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110813 | Vaughan | Brandon | M | Oregon | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 108935 | Vaughan | Geoff | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 107095 | Vaughan | Patrick | M | 8 | Rim to River 100m 2021 (Finisher) | ||
| 104419 | Vautin | Kristen | F | AUS | AU | 4 | Blackall 100K 100k 2021 (18 hours) |
| 109430 | Vazquez | Edna Jackeline | F | IL | US | 1 | Mohican 100m 2021 (Finisher) |
| 101418 | Vazquez | Sergio | M | MEX | MX | 2 | Oso Negro 100k 2020 (24 hours) |
| 100332 | Vedder | Timm | M | MN | US | 2 | Pinhoti 100m 2020 (Finisher) |
| 108929 | Veermeer | Julian | M | Western Cape | ZA | 1 | Ultra-Trail Cape Town 100k 2019 (17 hours) |
| 109989 | Vega | Alex | M | CA | US | 1 | Sean O'Brien 100k 2021 (16 hours) |
| 107186 | Vega | Raúl | M | Madrid | ES | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 108399 | Velasco | Noel | M | CA | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 110612 | VELASQUEZ | manuel | M | Occitanie | FR | 1 | Endurance Trail des Templiers 105k 2021 (19 hours) |
| 110692 | Velho | Vanuza Ramos | F | Paraná | BR | 1 | Brazil 135 135m 2021 (Finisher) |
| 100232 | Veliz | Ruben | M | NC | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 100770 | Veltri | Caroline | F | CO | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 107680 | Vennard | Devin | M | Colorado | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 101713 | Ventosa | Charles | M | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 109090 | Ventura | Pablo | M | CA | US | 1 | Sean O'Brien 100k 2020 (16 hours) |
| 104301 | Venz | Gary | M | AUS | AU | 2 | Blackall 100K 100k 2021 (18 hours) |
| 109763 | Veraza | Luis | M | Mexico | MX | 1 | Vulcano Ultra-Trail 100k 2019 (24 hours) |
| 109423 | Verdier | Philippe | M | PACA | FR | 1 | Transgrancanaria 125k 2021 (28 hours) |
| 100936 | Verdon | Tony | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 101187 | Vergara | Mike | M | TX | US | 32 | Leadville Trail 100m 2021 (Finisher) |
| 103471 | Verhees | Robert | M | CA | US | 4 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 110310 | VERLHAC | Vincent | M | AUVERGNE RHONE ALPES | FR | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108734 | Vernieuw | Chase | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108683 | Vézina | Yannick | M | QC | CA | 1 | Ultra-Trail Harricana 125k 2020 (26 hours) |
| 109054 | Viands | Kelly | F | MD | US | 1 | Yeti 100m 2020 (Finisher) |
| 100743 | Vibert | Sheila | F | VA | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 100949 | Vick | Spring | F | CA | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 109653 | Vickerman | Krissy | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 105165 | Vickers | William | M | CO | US | 32 | Never Summer 103k 2020 (23 hours) |
| 104836 | Vickroy | Khris | M | IA | US | 8 | Cruel Jewel 106m 2021 (Finisher) |
| 101640 | Vidmar | Chris | M | UT | US | 8 | Zion 100k 2021 (19 hours) |
| 104632 | Vielpeau | Yumi | F | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 105059 | Vienings | Eddie | M | Western Cape | ZA | 4 | SkyRun 100k 2019 (28 hours) |
| 110145 | Viens | Luke | M | Massachusetts | US | 1 | Rim to River 100m 2021 (Finisher) |
| 110096 | Vigil | Sandra | F | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109985 | Vilchis | Charline | F | CA | US | 1 | Sean O'Brien 100k 2021 (16 hours) |
| 104503 | Villegas | Carol | F | IL | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 107245 | Viloria | Careli | M | CA | US | 1 | Zion 100m 2021 (Finisher) |
| 110128 | Vince | Barry | M | CA | US | 1 | Javelina Jundred 100m 2020 (Finisher) |
| 102368 | Vincent | Christina | F | CA | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 110904 | Vincent | Christine | F | California | US | 1 | Western States 100m 2021 (Finisher) |
| 108748 | Vines | Liam | M | Wicklow | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 103994 | Visram | Alexander | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 103166 | Vitte | Joachim | M | DEU | DE | 2 | Ponitrianska 105k 2020 (24 hours) |
| 102409 | Vlaander | Ruben | M | NLD | NL | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107947 | Vlach | Sarah | F | ID | US | 1 | Bear, The 100m 2021 (Finisher) |
| 110866 | Voeks | Darby | M | Minnesota | US | 1 | Bryce 100m 2021 (Finisher) |
| 109631 | Vogel | Davif | M | NY | US | 1 | Zion 100m 2021 (Finisher) |
| 102811 | Vogel | Greg | M | WA | US | 2 | Cascade Crest 100m 2021 (Finisher) |
| 102142 | Vogel | Mark | M | WA | US | 32 | Zion 100m 2021 (Finisher) |
| 103032 | Vogel | Matthew | M | OH | US | 8 | Zion 100k 2021 (19 hours) |
| 104825 | Vogel | Todd | M | CA | US | 4 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106027 | Vogler | Tracy | M | CA | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 109608 | Vogt | Peter | M | Niedersachsen | DE | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 102218 | Vokes | Marty | M | SC | US | 2 | Bear, The 100m 2021 (Finisher) |
| 107530 | Volčanšek | Mitja | M | none | SI | 1 | Tuscany Crossing 160k 2021 (Finisher) |
| 109804 | Völkel | Sarah | F | Salzburg | AT | 1 | Mozart 100 108k 2021 (22 hours) |
| 101500 | Von Bokern | Joe | M | CO | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 102148 | Von Flue | Daniel | M | OR | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 103589 | Von Frenckell | Wilhelm | M | FIN | FI | 32 | Nuts Ylläs Pallas 105k 2021 (22 hours) |
| 102288 | Vondra | Philip | M | NY | US | 16 | Yeti 100m 2021 (Finisher) |
| 108865 | Vosburg | Scott | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 110387 | Voss | Joshua | M | UT | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 110674 | Vriens | Lodewijk | M | - | HK | 1 | Hong Kong 100K 100k 2020 (23 hours) |
| 109893 | Vringer | Dewi | F | Gelderland | NL | 1 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 107472 | Vuletic | Kelly | F | OR | US | 1 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 106639 | Vystejn | Jiri | M | CZE | CZ | 2 | Krakonosova Stovka 100k 2021 (22 hours) |
| 106660 | Wacker | Jess | F | CA | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 107716 | Waddoups | Heidi | F | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 103429 | Waddoups | Seth | M | UT | US | 2 | Bear, The 100m 2020 (Finisher) |
| 100573 | Wade | Waylon | M | NM | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 109165 | Wagner | Aaron | M | Ohio | US | 1 | Indiana 100m 2021 (Finisher) |
| 102220 | Wagner | Jason | M | MO | US | 4 | Leadville Trail 100m 2021 (Finisher) |
| 101252 | Wagner | Thomas | M | AUT | AT | 16 | Grossglockner UltraTrail 84k 2021 (20 hours) |
| 107781 | Wagner | Tim | M | OH | US | 1 | Never Summer 103k 2021 (23 hours) |
| 102975 | Wagoner | Tory | M | NC | US | 2 | Yeti 100m 2020 (Finisher) |
| 105408 | Wainhouse | Owen | M | GBR | GB | 64 | North Downs Way 100m 2021 (Finisher) |
| 109381 | Wainwright | Francis | M | Wiltshire | GB | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 100181 | Wainwright | Paul | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103195 | Wait | Isaac | M | WV | US | 1 | Western States 100m 2021 (Finisher) |
| 109227 | Waite | John | M | Va | US | 1 | Hellgate 100k 2020 (17 hours) |
| 107683 | Wake | Tom | M | Suffolk | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 104772 | Walch | Ed | M | MO | US | 32 | Arkansas Traveler 100m 2021 (Finisher) |
| 109075 | Waldron | Laura | F | Illinois | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109394 | Waldrop | Cabe | M | Colorado | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100838 | Waldschmidt | Dan | M | SC | US | 2 | No Business 100m 2021 (Finisher) |
| 103291 | Walker | Andrew | M | AUS | AU | 2 | Blackall 100K 100k 2021 (18 hours) |
| 110296 | Walker | Bri | U | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107951 | Walker | Brian | M | VA | US | 1 | Yeti 100m 2021 (Finisher) |
| 107966 | Walker | Christopher | M | Berkshire | GB | 1 | Autumn 100m 2021 (Finisher) |
| 110575 | Walker | David | M | CT | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 105814 | Walker | Jonathan | M | GBR | GB | 2 | Thames Path 100 100m 2021 (Finisher) |
| 105283 | Walker | Kevin | M | KY | US | 2 | No Business 100m 2021 (Finisher) |
| 107455 | Walker | Kevin | M | Virginia | US | 1 | Hellgate 100k 2020 (17 hours) |
| 105821 | Walker | Mary | F | IN | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 109498 | Walker | Nathan | M | NY | US | 1 | Worlds End 100k 2020 (19 hours) |
| 108663 | Wall | Zack | M | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108141 | Wallace | Carolyn | F | OH | US | 1 | Mohican 100m 2021 (Finisher) |
| 108099 | Wallace | Greg | M | OH | US | 1 | Mohican 100m 2020 (Finisher) |
| 110196 | Wallace | John | M | Texas | US | 1 | Umstead 100m 2021 (Finisher) |
| 106522 | Wallace | Sarah | F | PA | US | 2 | Laurel Highlands 70.5m 2021 (20 hours) |
| 108145 | Wallace | Zachary | M | California | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100570 | Wallin | Mike | M | MN | US | 2 | Kettle Moraine 100m 2021 (Finisher) |
| 108076 | Walling | Alistair | M | North Yorkshire | GB | 1 | Hardwolds 2019 80m 2019 (24 hours) |
| 103425 | Walls | Andrew | M | OR | US | 2 | Waldo 100k 2021 (17 hours) |
| 103731 | Walmsley | Konstantin | M | NJ | US | 16 | Hellgate 100k 2020 (17 hours) |
| 108081 | Walor | Greg | M | CA | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109979 | Walrafen | Karen | F | Oregon | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 109325 | Walsh | James | M | OR | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 108496 | Walsh | John | M | QLD | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 108170 | Walsh | Rowan | M | Limerick | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 110517 | Walters | Beth | F | New Mexico | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 110578 | Walters | Bill | M | Oregon | US | 1 | Beaverhead 100k 2021 (19 hours) |
| 109991 | Walters | Rheeanna | F | Pa | US | 1 | Eastern States 100m 2021 (Finisher) |
| 103905 | Walton | Adam | M | PA | US | 4 | Burning River 100m 2021 (Finisher) |
| 101642 | Walton-Robertson | Supaporn | F | NV | US | 4 | Zion 100k 2020 (19 hours) |
| 100639 | Wang | Edward | M | CA | US | 64 | Leona Divide 100k 2021 (16 hours) |
| 103281 | Wang | Gary | M | CA | US | 8 | Waldo 100k 2021 (17 hours) |
| 109266 | wang | Howard | M | UT | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109183 | Wang | Matt | M | New York | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 102678 | Wang | Ronghui | M | IL | US | 2 | Burning River 100m 2021 (Finisher) |
| 105384 | Wang | Xiaolin | M | CHN | CN | 8 | Hong Kong 100K 100k 2020 (23 hours) |
| 110455 | Ward | Henry | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 101269 | Ward | Jason | M | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 102512 | Ward | Ken | M | OR | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 101159 | Ward | Matt | M | CA | US | 32 | Quicksilver 100k 2021 (16 hours) |
| 101337 | Ward | Richard | M | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 104663 | Ward-Waller | Chelsea | F | AK | US | 16 | Canyons, The 100k 2021 (19 hours) |
| 105152 | Ward-Waller | Jeanie | F | CA | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 101092 | Warden | Steven | M | SC | US | 4 | Grindstone 100m 2021 (Finisher) |
| 104229 | Wareham | Julian | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 108760 | Warfvinge | Enar | M | n/a | SE | 1 | Kullamannen 100m 2020 (Finisher) |
| 109654 | Warner | Ian | M | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 109590 | Warner | Nathan | M | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100958 | Warnick | Rob | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 109011 | Warnke | Jacob | M | Minnesota | US | 1 | Zion 100k 2021 (19 hours) |
| 107103 | Warunchaichana | Wittaya | M | 2 | Pong Yaeng Trail 166k 2019 (Finisher) | ||
| 108741 | Washausen | Erich | M | Arkansas | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 104481 | Washburn | Brendan | M | CA | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 103044 | Watanabe | Takahiro | M | JPN | JP | 8 | Wasatch Front 100m 2021 (Finisher) |
| 107608 | Waterman-Evans | Louis | M | Argyll & Bute | GB | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 100549 | Watkins | Aaron | M | WV | US | 2 | Eastern States 100m 2021 (Finisher) |
| 100769 | Watkins | Brian | M | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 108900 | Watkins | Luke | M | Arizona | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 108877 | Watne | Zac | M | Utah | US | 1 | Wasatch Front 100m 2021 (Finisher) |
| 105817 | Watson | Alistair | M | GBR | GB | 32 | Race to the Stones 100k 2021 (17 hours) |
| 107747 | Watson | Brian | M | Texas | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 107499 | Watson | Robby | M | Alabama | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 103457 | Watson | Thomas | M | NZL | NZ | 16 | Tarawera 100K 102k 2020 (17 hours) |
| 102022 | Watters | Rebecca | F | GA | US | 8 | Quicksilver 100k 2021 (16 hours) |
| 100842 | Watts | Julie | F | CA | US | 4 | Black Canyon 100k 2020 (17 hours) |
| 108691 | Watts | Laura | F | West Sussex | GB | 1 | South Downs Way 100m 2021 (Finisher) |
| 107262 | Waugh | Andrew | M | OH | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110158 | Wayman | Tim | M | Tennessee | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 102847 | Weast | Rebecca | F | VA | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 102020 | Weathers | Bryan | M | CA | US | 32 | Quicksilver 100k 2021 (16 hours) |
| 110456 | Weathers | Justin | M | NJ | US | 1 | Worlds End 100k 2021 (19 hours) |
| 102515 | Weaver | Alexander | M | TX | US | 4 | HOKA Bandera 100k 2020 (17 hours) |
| 107252 | Weaver | Claudia | F | Texas | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 101783 | Weaver | Nelson | M | KY | US | 2 | Georgia Death Race 74m 2021 (23 hours) |
| 103373 | Weaver | Tonya | F | AR | US | 2 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107864 | Webb | Levi | M | CA | US | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 105203 | Webb | Martin | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 107670 | Webb | Michael | M | OK | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110842 | Weber | Brad | M | Bayern | DE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108161 | Weber | Chris | F | IL | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 104847 | Weber | Joey | M | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 109534 | Weber | Marc | M | OR | US | 1 | Waldo 100k 2021 (17 hours) |
| 109301 | Weber | Quin | F | Ga | US | 1 | Pinhoti 100m 2021 (Finisher) |
| 104620 | Weber | Tim | M | IN | US | 8 | Tunnel Hill 100m 2019 (Finisher) |
| 107925 | Wedemeyer | Dana | F | Tennessee | US | 1 | Yeti 100m 2021 (Finisher) |
| 107476 | Wedlarski | Rudy | M | Maine et Loire | FR | 1 | Nuts Ylläs Pallas 160k 2021 (Finisher) |
| 109566 | Weedman | Robert | M | Virginia | US | 1 | Laurel Highlands 70.5m 2021 (20 hours) |
| 104945 | Weekley | Marlin | M | IL | US | 2 | Tunnel Hill 100m 2020 (Finisher) |
| 105517 | Weemaes | Michiel | M | BEL | BE | 2 | Transgrancanaria 125k 2020 (28 hours) |
| 109243 | Weeter | Bryce | M | North Carolina | US | 1 | Arkansas Traveler 100m 2021 (Finisher) |
| 109945 | Wegner | Carita | F | Massachusetts | US | 1 | Race to the Stones 100k 2021 (17 hours) |
| 103363 | Wegner | Chad | M | TX | US | 2 | HOKA Bandera 100k 2020 (17 hours) |
| 102697 | Wehan | Christopher | M | CA | US | 2 | Sean O'Brien 100k 2021 (16 hours) |
| 106002 | Wehner | Robert | M | WI | US | 16 | Hardrock 100m 2021 (Finisher) |
| 102709 | Weibel | Ryan | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 101350 | Weiblen | Ken | M | CA | US | 32 | Rio Del Lago 100m 2021 (Finisher) |
| 110457 | Weida | Peter | M | PA | US | 1 | Worlds End 100k 2021 (19 hours) |
| 101717 | Weidman | William | M | VA | US | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110845 | Weigle | James | M | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 107566 | Weinberg | Morgan | F | CO | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 104007 | Weinman | Casey | M | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 100196 | Weiss | Annie | F | WI | US | 16 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 106451 | Weiss | Mike | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 101194 | Weitzel | Colleen | F | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 108430 | Welch | Amber | F | NE | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109595 | Welch | Cullen | M | Georgia | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 101209 | Welch | Derek | M | UT | US | 2 | Bear, The 100m 2021 (Finisher) |
| 108620 | Welch | J | M | NC | US | 1 | Yeti 100m 2021 (Finisher) |
| 102016 | Welch | Jenny | F | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 101198 | Welch | Josh | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 107293 | Welcome | Nalene | F | Ohio | US | 1 | Worlds End 100k 2020 (19 hours) |
| 105351 | Well | Jay | M | OR | US | 2 | Wasatch Front 100m 2021 (Finisher) |
| 105798 | Wells | Majel | F | IN | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 105799 | Wenczel | Gary | M | PA | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 108204 | Wendling | Amy | F | MI | US | 1 | Hennepin 100m 2021 (Finisher) |
| 102987 | Wendling | Justin | M | Texas | US | 4 | Sean O'Brien 100k 2021 (16 hours) |
| 100862 | Wenger | Nick | M | CA | US | 2 | Castle Peak 100k 2021 (21 hours) |
| 100389 | Wengler | Marc | M | LUX | LU | 4 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 102668 | Wenninghoff | Kyle | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 100016 | Wentzell | Josh | M | PA | US | 2 | Hennepin 100m 2021 (Finisher) |
| 107584 | WERKMEISTER | MARK | M | NM | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108997 | Werner | Nicole | F | Pennsylvania | US | 1 | Worlds End 100k 2021 (19 hours) |
| 107650 | Wessels | Rich | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108305 | West | Brady | M | NE | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109785 | West | Gene | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109462 | West | Jeremiah | M | Utah | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 103207 | West | Serrah | F | ID | US | 4 | Beaverhead 100k 2021 (19 hours) |
| 108175 | Westbrook | David | M | Oregon | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 103345 | Westergaard | Danny | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 110156 | Westlake | Philip | M | Pennsylvania | US | 1 | Rim to River 100m 2021 (Finisher) |
| 103218 | Westwick | Andrew | M | AUS | AU | 4 | Blackall 100K 100k 2020 (18 hours) |
| 101601 | Wetzel | Evan | M | WI | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 104872 | Wever | Lael | M | OK | US | 2 | Arkansas Traveler 100m 2021 (Finisher) |
| 108307 | Weyant | Chad | M | IOWA | US | 1 | Kettle Moraine 100m 2021 (Finisher) |
| 100036 | Whalan | Jeffrey | M | AUS | AU | 4 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 100694 | Whalen | Matt | M | CA | US | 64 | Never Summer 103k 2021 (23 hours) |
| 103422 | Wheat | Kevin | M | CO | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 108092 | Wheeler | Timothy | M | CA | US | 1 | Cuyamaca 100k 2021 (17 hours) |
| 101928 | Whistler | Brandon | M | IN | US | 2 | Rim to River 100m 2021 (Finisher) |
| 109482 | Whitaker | Samuel | M | PR | US | 1 | Yeti 100m 2021 (Finisher) |
| 107314 | White | Aaron | M | KY | US | 1 | Never Summer 103k 2021 (23 hours) |
| 105757 | White | Eli | M | UT | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 100185 | White | James | M | GBR | GB | 2 | Tor des Géants 330k 2021 (132 hours) |
| 109350 | White | Jared | M | CA | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 100765 | White | Keith | M | NV | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 108330 | White | Rebecca | F | NY | US | 1 | Georgia Death Race 74m 2020 (23 hours) |
| 101241 | White | Reginald | M | CA | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 107758 | White | Richard | M | Texas | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 109970 | White | Robert | M | Ca | US | 1 | Quicksilver 100k 2021 (16 hours) |
| 104236 | White | Trevor | M | OR | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 110142 | Whitehall | Simon | M | Northumberland | GB | 1 | Lakeland 100m 2021 (Finisher) |
| 109746 | Whiteman | Manuel | M | MT | US | 1 | Bighorn 100m 2021 (Finisher) |
| 103779 | Whitestone | Christopher | M | CO | US | 2 | Canyons, The 100k 2021 (19 hours) |
| 109714 | Whitfield | William | M | England | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 101101 | Whiting | Nicole | F | ID | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 108075 | Whitlow | John | M | TX | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 100290 | Whitmore | Steph | F | CA | US | 32 | Quicksilver 100k 2021 (16 hours) |
| 102511 | Whitson | Brad | M | MB | CA | 8 | Lost Soul Ultra 100k 2021 (21 hours) |
| 103103 | Whittaker | John | M | GBR | GB | 4 | Thames Path 100 100m 2020 (Finisher) |
| 100212 | Whyman | Matt | M | GBR | GB | 2 | Thames Path 100 100m 2021 (Finisher) |
| 104646 | Wiboonkij-Arphakul | Chaiyaporn | M | THA | TH | 4 | Ultra Trail Nan 109k 2020 (30 hours) |
| 105851 | Wickert | Douglas | M | CO | US | 1 | Western States 100m 2021 (Finisher) |
| 100782 | Widmyer | Matthew | M | ID | US | 4 | Hellgate 100k 2019 (17 hours) |
| 109368 | Wiedman | BJ | M | IL | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 110029 | Wiegand | Megan | F | DC | US | 1 | Rim to River 100m 2021 (Finisher) |
| 109344 | Wiest | Cliff | M | California | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 103531 | Wiffen | Joshua | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 103073 | Wight | Jordan | M | CO | US | 32 | Bryce 100m 2021 (Finisher) |
| 110783 | Wijma | Willem | M | Friesland | NL | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110015 | Wilbert | Florian | M | Germany | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 104733 | Wilburn | Stephen | M | GBR | GB | 2 | Lakeland 100m 2021 (Finisher) |
| 103706 | Wildberger | Gabriel | M | CHE | CH | 1 | Western States 100m 2021 (Finisher) |
| 104251 | Wildig | Rob | M | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 102002 | Wiley | Jack | M | WA | US | 8 | Javelina Jundred 100m 2021 (Finisher) |
| 109290 | WILEY | JOSHUA | M | West Point | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 102111 | Wilk | Jacek | M | POL | PL | 2 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 109875 | Wilkie | Triston | M | Ca | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 101657 | Wilkins | David Jason | M | CA | US | 128 | Rio Del Lago 100m 2021 (Finisher) |
| 108647 | Wilkins | Jill | F | UT | US | 1 | Bear, The 100m 2020 (Finisher) |
| 107440 | Wilkins | Robert | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 100797 | Wilkinson | Mike | M | CO | US | 4 | Javelina Jundred 100m 2021 (Finisher) |
| 109404 | Will | Drew | M | IN | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 109969 | Will | Thad | M | PA | US | 1 | Long Haul 100m 2020 (Finisher) |
| 107770 | Willard | Michael | M | Montana | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 105639 | Willcox | Ally | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 110437 | Willems | Bram | M | Vlaams-Brabant | BE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 105338 | Willemse | Yolande | F | AUS | AU | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 103318 | Williams | Brandon | M | OR | US | 8 | Waldo 100k 2021 (17 hours) |
| 104412 | Williams | Brent | M | TX | US | 32 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 102544 | Williams | Brian | M | TN | US | 2 | Beaverhead 100k 2020 (19 hours) |
| 107111 | Williams | Bryan | M | 32 | Hardrock 100m 2021 (Finisher) | ||
| 109749 | Williams | Bryce | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 107342 | Williams | Gareth | M | Middlesex | GB | 1 | Autumn 100m 2021 (Finisher) |
| 104285 | Williams | Gary | M | WA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 109068 | Williams | Jason | M | West | BM | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108109 | Williams | John | M | Cork | IE | 1 | Kerry Way Ultra 193k 2020 (40 hours) |
| 101522 | Williams | Mark | M | CA | US | 16 | Rio Del Lago 100m 2021 (Finisher) |
| 103966 | Williams | Nathan | M | UT | US | 2 | Zion 100m 2021 (Finisher) |
| 104525 | Williams | Ryan | M | PA | US | 64 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 108904 | Williams | Ryan | M | Hampshire | GB | 1 | North Downs Way 100m 2020 (Finisher) |
| 107464 | Williams | Ryan | M | MA | US | 1 | Grindstone 100m 2021 (Finisher) |
| 103939 | Williams | Sarah Kirsty | F | GBR | GB | 4 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108958 | Williams | Shane | M | UT | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 109503 | Williams | Shane | M | HI | US | 1 | Long Haul 100m 2020 (Finisher) |
| 109143 | Williamson | Carole | F | Maryland | US | 1 | Yeti 100m 2021 (Finisher) |
| 108058 | Wills | Josh | M | UT | US | 1 | Mohican 100m 2020 (Finisher) |
| 110602 | Willsey | Jana | F | Colorado | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 108115 | Wilmer | Samuel | M | Indiana | US | 1 | HOKA Bandera 100k 2021 (17 hours) |
| 106127 | Wilson | Amanda | F | NC | US | 2 | Zion 100m 2021 (Finisher) |
| 108729 | Wilson | Casey | M | VA | US | 1 | Yeti 100m 2020 (Finisher) |
| 102597 | Wilson | Catie | F | NC | US | 4 | Yeti 100m 2021 (Finisher) |
| 110118 | Wilson | Cliff | M | NC | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 102172 | Wilson | David | M | OR | US | 2 | Never Summer 103k 2020 (23 hours) |
| 102631 | Wilson | Jeff | M | NC | US | 4 | Yeti 100m 2021 (Finisher) |
| 100749 | Wilson | Jennifer | F | CA | US | 64 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 110217 | Wilson | Richard | M | Cumbria | GB | 1 | Thames Path 100 100m 2021 (Finisher) |
| 109623 | Wilson | Torbjörn | M | Stockholm | SE | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 108859 | Wilson | Trevor | M | IL | US | 1 | Long Haul 100m 2021 (Finisher) |
| 105289 | Wilson | Zac | M | GA | US | 8 | Bighorn 100m 2021 (Finisher) |
| 109692 | Wilton | Mitchell | M | Queensland | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 101661 | Winchester | Jeff | M | NC | US | 2 | Yeti 100m 2021 (Finisher) |
| 101589 | Wind | Andy | M | MN | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 108358 | Windell | Becca | F | WA | US | 1 | Bear, The 100m 2021 (Finisher) |
| 108019 | Windsor | Troy | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107589 | Wingerter | Erin | F | CO | US | 1 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 107560 | Wingett | Jacob | M | Arizona | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 107465 | Winicki | Becky | F | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 108820 | Winiger | Beau | U | IN | US | 1 | Indiana 100m 2021 (Finisher) |
| 106217 | Winkler | Jon | M | CO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 102822 | Winkler | Simone Angela | F | CA | US | 4 | Quicksilver 100k 2021 (16 hours) |
| 109563 | Winn | Kevin | M | Kentucky | US | 1 | Pinhoti 100m 2020 (Finisher) |
| 110002 | Winslade | Andrew | M | Queensland | AU | 1 | Blackall 100K 100k 2021 (18 hours) |
| 108267 | Winslett | Kris | M | TEXAS | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 100539 | Winter | Cheri | F | CA | US | 4 | Canyons, The 100k 2021 (19 hours) |
| 107674 | Winter | Rebekah | F | NV | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 109251 | Winter | Sara | F | Waikato | NZ | 1 | Tarawera 100M 100m 2021 (30 hours) |
| 107183 | Wisler | Ryan | M | CO | US | 1 | Bighorn 100m 2021 (Finisher) |
| 110467 | Wiśniewski | Paweł | M | Dolnyśląsk | PL | 1 | TDS (Sur les Traces des Ducs de Savoie) 147k 2021 (42 hours) |
| 102560 | Witcher | John | M | CO | US | 2 | Bighorn 100m 2021 (Finisher) |
| 107115 | Witko | David | M | AZ | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 102448 | Witko | Ryan | M | NY | US | 64 | Twisted Branch 100k 2021 (19 hours) |
| 110543 | Witte | Hanno | M | Baden-Würrttemberg | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 101457 | Witte | Joshua | M | CA | US | 8 | Rim to River 100m 2021 (Finisher) |
| 106162 | Wittel | Kyle | M | OH | US | 4 | Canal Corridor 100 100m 2021 (Finisher) |
| 108924 | Wittman | Jacob | M | Washington | US | 1 | Hennepin 100m 2021 (Finisher) |
| 110099 | Wittman | Jake | M | CA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 108639 | Wittrock | Jeremy | M | South Dakota | US | 1 | Superior 100 100m 2021 (Finisher) |
| 108497 | Witty | Roy | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 105228 | Wizniuk | Daylan | M | AB | CA | 4 | Lost Soul Ultra 100k 2021 (21 hours) |
| 108184 | Wlad | Kerrie | F | Colorado | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 104304 | Wnuk | Jay | M | WI | US | 32 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 105249 | Woitte | Dale | M | ON | CA | 16 | Tunnel Hill 100m 2019 (Finisher) |
| 107558 | Wojcik | Kevin | M | Georgia | US | 1 | Georgia Death Race 74m 2021 (23 hours) |
| 107162 | Wojta | Jill | F | Wisconsin | US | 1 | Hennepin 100m 2021 (Finisher) |
| 107910 | Wojtala | Ewelina | F | Somerset | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 109376 | Wolcott-Lovell | Michele | F | NY | US | 1 | Worlds End 100k 2020 (19 hours) |
| 100672 | Wolf | Chad | M | OH | US | 4 | Hennepin 100m 2021 (Finisher) |
| 110634 | Wolf | Torben | M | Lowersaxony | DE | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107733 | Wolfe | Chris | U | AE | US | 1 | Bear, The 100m 2020 (Finisher) |
| 107697 | Wolfe | Donielle | F | AE | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100651 | Wolfe | Gavin | M | CA | US | 8 | Sean O'Brien 100k 2020 (16 hours) |
| 108310 | Wolff | Sarah | F | Ohio | US | 1 | HURT 100m 2020 (Finisher) |
| 103834 | Wolfgang | Jesse | M | NJ | US | 64 | Hellgate 100k 2020 (17 hours) |
| 103848 | Wolodkin | Greg | M | MA | US | 2 | Yeti 100m 2021 (Finisher) |
| 104999 | Woltering | Coree | M | IL | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 107116 | Womelsdorf | Frank | M | Greater London | GB | 16 | South Downs Way 100m 2021 (Finisher) |
| 107335 | Wong | Aleck | M | VA | US | 1 | Hellgate 100k 2020 (17 hours) |
| 109481 | Wong | Brittani | F | Tennessee | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 102554 | Wong | Calvin | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108482 | Woo | Steve | M | CA | US | 1 | Castle Peak 100k 2021 (21 hours) |
| 103672 | Wood | Amber | F | AUS | AU | 2 | Blackall 100K 100k 2021 (18 hours) |
| 101795 | Wood | Caroline | F | CA | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 101115 | Wood | Derek | M | FL | US | 2 | Never Summer 103k 2020 (23 hours) |
| 108795 | Wood | Mark | M | North Riding of Yorkshire | GB | 1 | Thames Path 100 100m 2020 (Finisher) |
| 103254 | Wood | Matthew | M | AUS | AU | 2 | Blackall 100K 100k 2020 (18 hours) |
| 102727 | Wood | Preston | M | UT | US | 4 | Wasatch Front 100m 2021 (Finisher) |
| 110071 | Wood | Sommer | F | CA | US | 1 | Mountain Lakes 100m 2021 (Finisher) |
| 103378 | Woodall | Stephen | M | AZ | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 100566 | Woodard | Ben | M | GA | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 102180 | Woodhouse | Roxanne | F | CA | US | 2 | Tahoe Rim Trail 100m 2021 (Finisher) |
| 104539 | Woods | Rachael | F | CO | US | 2 | Run Rabbit Run 100m 2021 (Finisher) |
| 105256 | Woods | Randall | M | NC | US | 16 | Umstead 100m 2021 (Finisher) |
| 108871 | Woodward | Canyon | M | NC | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 108912 | Woodward | Todd | M | CA | US | 1 | Lake Sonoma 100K 100k 2021 (18 hours) |
| 103798 | Woody | Shaun | M | CA | US | 4 | Bear, The 100m 2021 (Finisher) |
| 107607 | woolf | andrew | M | ID | US | 1 | Bear, The 100m 2021 (Finisher) |
| 100105 | Woollett | Nic | M | AUS | AU | 2 | Blackall 100K 100k 2020 (18 hours) |
| 106001 | Woolley | Tim | M | WY | US | 2 | Never Summer 103k 2021 (23 hours) |
| 103517 | Woolman | Andrew | M | CA | US | 4 | Rio Del Lago 100m 2021 (Finisher) |
| 107117 | Woolman | Angie | F | 8 | Quicksilver 100k 2021 (16 hours) | ||
| 104742 | Woolston | Piers | M | GBR | GB | 32 | South Downs Way 100m 2021 (Finisher) |
| 110803 | Wooten | Abrea | F | TX | US | 1 | Burning River 100m 2020 (Finisher) |
| 100451 | Wooten | Mark | M | TX | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2021 (Finisher) |
| 101856 | Worden | Chris | M | AZ | US | 8 | Black Canyon 100k 2020 (17 hours) |
| 110712 | Workman | Sunny | F | AL | US | 1 | Cruel Jewel 106m 2021 (Finisher) |
| 109814 | Worster | Janet | F | England | GB | 1 | Race to the Stones 100k 2021 (17 hours) |
| 106599 | Worthington | Brandon | M | CO | US | 2 | Moab 240 238m 2021 (102 hours) |
| 100882 | Woyth | Marilee | F | MT | US | 8 | Canyons, The 100k 2021 (19 hours) |
| 101359 | Wray | James | M | GA | US | 2 | Georgia Death Race 74m 2020 (23 hours) |
| 102841 | Wrenholt | Valerie | F | NC | US | 8 | Yeti 100m 2021 (Finisher) |
| 110598 | WRIGHT | ALEXANDER | M | WA | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 104478 | Wright | Chris | M | CO | US | 16 | Leadville Trail 100m 2021 (Finisher) |
| 109333 | Wright | Eric | M | CO | US | 1 | Never Summer 103k 2021 (23 hours) |
| 100601 | Wright | John | M | KY | US | 4 | Cruel Jewel 106m 2021 (Finisher) |
| 107764 | Wright | Justin | M | ON | CA | 1 | Moab 240 238m 2021 (102 hours) |
| 102085 | Wright | Kaitlin | F | IN | US | 8 | HOKA ONE ONE Rocky Raccoon 100m 2020 (Finisher) |
| 102344 | Wright | Katie | F | NZL | NZ | 2 | Tarawera 100M 100m 2021 (30 hours) |
| 104454 | Wright | Lisa | F | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 104335 | Wright | Pj | M | NJ | US | 2 | Worlds End 100k 2021 (19 hours) |
| 107414 | Wright | Wayne | M | FL | US | 1 | Long Haul 100m 2020 (Finisher) |
| 102149 | Wuennenberg | Joerg | M | DEU | DE | 4 | Mozart 100 108k 2021 (22 hours) |
| 109737 | Wurl | Kincaid | M | alabama | US | 1 | No Business 100m 2021 (Finisher) |
| 108222 | Wyatt | Jake | M | CO | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 110540 | Wycklendt | Matt | M | WI | US | 1 | Hennepin 100m 2021 (Finisher) |
| 109797 | Wyckoff | Justin | M | Utah | US | 1 | Bear, The 100m 2021 (Finisher) |
| 107233 | Wyker | Brett | M | CO | US | 1 | Never Summer 103k 2020 (23 hours) |
| 107995 | wyland | brian | M | HI | US | 1 | Bryce 100m 2021 (Finisher) |
| 109321 | Wynn | Josh | M | TX | US | 1 | Leadville Trail 100m 2021 (Finisher) |
| 107983 | Wynne | Ricki | M | Leitrim | IE | 1 | Kerry Way Ultra 193k 2021 (40 hours) |
| 101141 | Wyszynska | Karolina | F | OR | US | 2 | Siskiyou Outback 100k 2021 (17 hours) |
| 109546 | xiang | fuzhao | F | Chongqing | CN | 1 | Ultra Trail Ninghai 108k 2020 (28 hours) |
| 109881 | Xiao | Yunguo | M | California | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 104612 | Xu | Yejun | M | CA | US | 32 | Quicksilver 100k 2021 (16 hours) |
| 108135 | Yabe | Shuji | M | Tokyo | JP | 1 | Burning River 100m 2020 (Finisher) |
| 109751 | Yabu | Yoshie | F | CA | US | 1 | Zion 100k 2021 (19 hours) |
| 109345 | Yada | Hiromu | M | Tokyo | JP | 1 | HURT 100m 2020 (Finisher) |
| 101974 | Yadav | Kunal | M | GBR | GB | 2 | South Downs Way 100m 2021 (Finisher) |
| 108467 | Yager | Nolan | M | Utah | US | 1 | Tunnel Hill 100m 2019 (Finisher) |
| 105030 | Yamada | Akira | M | NY | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
| 101436 | Yamagata | Kuni | M | CA | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 108450 | Yamamoto | Kana | F | HI | US | 1 | HURT 100m 2020 (Finisher) |
| 109929 | Yamamoto | Sam | M | AB | CA | 1 | Lost Soul Ultra 100k 2021 (21 hours) |
| 102733 | Yamashita | Makiko | F | CA | US | 16 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 104315 | Yan | Eric | M | OR | US | 2 | IMTUF 100m 2021 (Finisher) |
| 110068 | Yanchuk | Michael | M | RI | US | 1 | Leona Divide 100k 2021 (16 hours) |
| 108057 | Yang | Chim | M | Ohio | US | 1 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 103486 | Yang | Fan | M | CHN | CN | 4 | Ultra Trail Ninghai 108k 2020 (28 hours) |
| 103515 | Yang | Fuchyi | M | CA | US | 2 | Quicksilver 100k 2021 (16 hours) |
| 103684 | Yawn | Caleb | M | GA | US | 16 | Bear, The 100m 2021 (Finisher) |
| 103989 | Ye | Honggang | M | IL | US | 2 | Cruel Jewel 106m 2021 (Finisher) |
| 108667 | Yeager | Jessica | F | Ohio | US | 1 | Burning River 100m 2021 (Finisher) |
| 107201 | Yedlinsky | Nicole | F | Kansas | US | 1 | Zion 100m 2021 (Finisher) |
| 101313 | Yelverton | Richard | M | MS | US | 8 | Javelina Jundred 100m 2020 (Finisher) |
| 110293 | yenne | thomas | M | IL | US | 1 | Hennepin 100m 2021 (Finisher) |
| 108707 | Yeoh | Seng Hock | M | Bangkok | TH | 1 | Pong Yaeng Trail 108k 2021 (30 hours) |
| 100926 | Yerkes | Todd | M | CA | US | 1 | Western States 100m 2021 (Finisher) |
| 109089 | YILDIZ | AHMET KEREM | M | none | TR | 1 | Salomon Cappadocia Ultra-Trail 119k 2021 (23 hours) |
| 100780 | Yingling | Leah | F | UT | US | 4 | Bear, The 100m 2021 (Finisher) |
| 109466 | Yip | Danny | M | NY | US | 1 | Worlds End 100k 2021 (19 hours) |
| 108009 | Ykema | Gretchen | F | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 107347 | Yllera Olea | Mario | M | Madrid | ES | 1 | Gran Trail Peñalara 110K 110k 2021 (25 hours) |
| 104551 | Yoakum | Jenny | F | WA | US | 4 | Zion 100m 2021 (Finisher) |
| 103007 | Yocum | Aaron | M | WV | US | 128 | Umstead 100m 2021 (Finisher) |
| 101926 | Yoder | Laura | F | PA | US | 4 | Mohican 100m 2020 (Finisher) |
| 100835 | Yonke | Kaitlyn | F | CO | US | 2 | Black Canyon 100k 2020 (17 hours) |
| 104953 | Yonker | Justin | M | FL | US | 2 | Umstead 100m 2021 (Finisher) |
| 110262 | York | Kirsten | F | NV | US | 1 | Black Canyon 100k 2020 (17 hours) |
| 109010 | Young | Arden | F | Alberta | CA | 1 | Run Rabbit Run 100m 2021 (Finisher) |
| 104013 | Young | Erin | F | MI | US | 2 | Bear, The 100m 2020 (Finisher) |
| 102137 | Young | Justin | M | HI | US | 2 | HURT 100m 2020 (Finisher) |
| 107563 | Young | Kelly | F | California | US | 1 | Cascade Crest 100m 2021 (Finisher) |
| 105681 | Young | Kyle | M | CO | US | 64 | Bear, The 100m 2021 (Finisher) |
| 110008 | Young | Mark | M | WA | US | 1 | Rio Del Lago 100m 2021 (Finisher) |
| 110340 | Young | Paul | M | Washington | US | 1 | Canyons, The 100k 2021 (19 hours) |
| 109167 | Young | Phil | M | Iowa | US | 1 | Black Canyon 100k 2021 (17 hours) |
| 109919 | Young | Richard | M | West Virginia | US | 1 | Rim to River 100m 2021 (Finisher) |
| 101226 | Young | Richard | M | OR | US | 2 | Mountain Lakes 100m 2021 (Finisher) |
| 103022 | Young | Richard | M | AUS | AU | 8 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 109501 | Young | Roger | M | CA | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 110652 | Young | Wayne | M | UT | US | 1 | Bear, The 100m 2021 (Finisher) |
| 104535 | Youngblom | Justin | M | MN | US | 4 | Zion 100m 2021 (Finisher) |
| 110837 | Yousling | David | M | Id | US | 1 | IMTUF 100m 2020 (Finisher) |
| 103783 | Yuronich | Brad | M | OH | US | 4 | Hallucination (Run Woodstock) 100m 2021 (Finisher) |
| 100820 | Zadvornykh | Dmitry | M | MN | US | 2 | Superior 100 100m 2021 (Finisher) |
| 105180 | Zambon | Alessio | M | ITA | IT | 2 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 107478 | Zambrano | Dominick | M | FL | US | 1 | Never Summer 103k 2020 (23 hours) |
| 109013 | Zamzow | Ben | M | MI | US | 1 | HOKA Bandera 100k 2020 (17 hours) |
| 103206 | Zaney | Greg | M | TX | US | 4 | HOKA Bandera 100k 2021 (17 hours) |
| 104704 | Zanoli | Stefano | M | ITA | IT | 8 | Ultra Trail Lago d'Orta 102k 2021 (24 hours) |
| 105658 | Zapor | Andrew | M | TN | US | 4 | Yeti 100m 2021 (Finisher) |
| 105148 | Zatyko | Zeke | M | CA | US | 4 | Burning River 100m 2021 (Finisher) |
| 108171 | Zavatchan | John | M | PA | US | 1 | Eastern States 100m 2021 (Finisher) |
| 107288 | Zavisiute | karolina | F | MO | US | 1 | Bigfoot 206m 2021 (85 hours) |
| 107123 | Zea | Dario | M | 16 | Lake Sonoma 100K 100k 2021 (18 hours) | ||
| 107677 | Zehetleitner | Christoph | M | Bavaria | DE | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 108324 | Zeiler | Lotti | F | TX | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 107352 | Zelibor | Rachel | F | NC | US | 1 | Umstead 100m 2021 (Finisher) |
| 100398 | Zemach | Ken | M | NV | US | 16 | Hardrock 100m 2021 (Finisher) |
| 104861 | Zenger | Jeff | M | IN | US | 16 | Tunnel Hill 100m 2020 (Finisher) |
| 103413 | Zenkert | Aj | M | ID | US | 2 | Bear, The 100m 2021 (Finisher) |
| 109514 | Zentack | Sarah | F | Arizona | US | 1 | Javelina Jundred 100m 2021 (Finisher) |
| 100252 | Zeppettella | Aneta | F | OH | US | 16 | HURT 100m 2020 (Finisher) |
| 101993 | Zerhusen | Mark | M | CA | US | 2 | Javelina Jundred 100m 2021 (Finisher) |
| 104307 | Zhang | Eric | M | CA | US | 2 | Sean O'Brien 100k 2021 (16 hours) |
| 109526 | Zhang | Ke | M | JiangSu | CN | 1 | Jiangnan 100 Ultra Trail 100k 2020 (28 hours) |
| 101728 | Zhang | Xu | M | CA | US | 4 | Jiangnan 100 Ultra Trail 100m 2021 (Finisher) |
| 110684 | Zhang | Zhuoming | M | Ile de France | FR | 1 | Ultra-Trail Du Mont-Blanc (UTMB) 166k 2021 (Finisher) |
| 110003 | zhao | jiaju | M | guangdong | CN | 1 | Ultra Trail Ninghai 108k 2020 (28 hours) |
| 103444 | Zhou | Ming | M | IL | US | 16 | Burning River 100m 2021 (Finisher) |
| 103367 | Zhu | Chaoyang | M | CHN | CN | 4 | Jiangnan 100 Ultra Trail 100m 2021 (Finisher) |
| 103228 | Zhu | Jin | F | MI | US | 4 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 102532 | Zibert | Dejan | M | SVN | SI | 2 | Istria 168k 2021 (Finisher) |
| 103601 | Zids | Aleks | M | AUS | AU | 2 | Ultra-Trail Australia 100k 2021 (19 hours) |
| 107393 | Ziegenmeyer | Logan | M | California | US | 1 | Siskiyou Outback 100k 2021 (17 hours) |
| 105984 | Zielke | Ryszard | M | OR | US | 8 | Siskiyou Outback 100k 2021 (17 hours) |
| 110078 | Ziminski | Andrew | M | OH | US | 1 | Laurel Highlands 70.5m 2020 (20 hours) |
| 110299 | Zimmer | Gustavo A. | M | Montevideo | UY | 1 | Rim to River 100m 2021 (Finisher) |
| 110746 | Zimny | Ryan | M | MN | US | 1 | Superior 100 100m 2021 (Finisher) |
| 110363 | ZISIMOPOULOS | FOTIS | M | Greece | GR | 1 | Lavaredo Ultra Trail 120k 2021 (26 hours) |
| 105316 | Zmierski | Ryan | M | AZ | US | 4 | Black Canyon 100k 2021 (17 hours) |
| 108458 | Zorzan | Andrea | M | Varese | IT | 1 | Courmayeur Champex Chamonix (CCC) 100k 2021 (25 hours) |
| 106567 | Zubinski | Piotr | M | POL | PL | 2 | Tarawera 100K 102k 2020 (17 hours) |
| 102337 | Zuchetto | Matt | M | WA | US | 8 | Beaverhead 100k 2021 (19 hours) |
| 104161 | Zuercher | Alexander | M | CO | US | 4 | Run Rabbit Run 100m 2021 (Finisher) |
| 104889 | Zweig | Jesse | M | CA | US | 2 | Rio Del Lago 100m 2021 (Finisher) |
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