Searched 27 events from September 24, 1999 to September 26, 2025
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Justen Ortiz | Male | Midvale, UT | 1 |
| Gregory Osborne | Male | Cottonwood Heights, UT | 1 |
| Kedric Osborne | Male | Littleton, CO | 1 |
| John O'Shea | Male | Salt Lake City, UT | 2 |
| James O'Sullivan | Male | Englewood, CO | 1 |
| Yoshio Otaki | Male | Portland, OR | 1 |
| Giancarlo Otani | Male | Lima, PERU | 1 |
| Abe Ott | Male | Durango, CO | 1 |
| Naoki Ouchi | Male | Azumino City | 1 |
| Brett Overby | Male | Highlands Ranch, CO | 1 |
| Benjamin Owen | Male | Providence, UT | 1 |
| Erich Owen | Male | Ophir, CO | 1 |
| Josh Owen | Male | Bend, OR | 1 |
| Nathan Owens | Male | Bountiful, UT | 1 |
| Rob Owens | Male | Fremont, NE | 1 |
| Matt Ozanic | Male | Fruita, CO | 2 |
| Kraig Packer | Male | Provo, UT | 4 |
| Piero Paganelli | Male | 1 | |
| Jeremy Pager | Male | Scottsdale, AZ | 1 |
| Alexander Palm | Male | Torslanda, SWE | 1 |
| Kan Pantanapichet | Male | Chicago, IL | 1 |
| Nettie Pardue | Female | South Lake Tahoe, CA | 1 |
| Eric Pardyjak | Male | Salt Lake City, UT | 1 |
| Jordan Park | Male | South Jordan, UT | 1 |
| Michael Park | Male | Mill Valley, CA | 1 |
| Barrett Parker | Male | Washington, DC | 1 |
| Nicole Parkhurst | Female | Lee's Summit, MO | 1 |
| Giant Parlin | Male | Falmouth, ME | 2 |
| Chase Parnell | Male | Bend, OR | 1 |
| Juan Parra | Male | Fairfield, CA | 1 |
| Devang Patel | Male | North Bergen, NJ | 1 |
| Jeff Patterson | Male | Carrboro, NC | 1 |
| Paul Pattillo | Male | Clinton, UT | 2 |
| Ashley Paulson | Female | St George, UT | 1 |
| Daniel Payne | Male | Austin, TX | 1 |
| Eric Payne | Male | Colorado | 1 |
| Tim Payne | Male | Salt Lake City, UT | 1 |
| Joseph Peacock | Male | Portland, OR | 1 |
| Larry Pearson | Male | Helotes, TX | 1 |
| Marci Pearson | Female | Eagle Mountain, UT | 1 |
| Matt Pearson | Male | Lehi, UT | 1 |
| David Pease | Male | Salt Lake City, UT | 3 |
| Nick Pedatella | Male | Boulder, CO | 4 |
| Adam Pedicini | Male | Logan, UT | 1 |
| Andrew Peet | Male | Vashon, WA | 1 |
| Erich Peitzsch | Male | Montana | 1 |
| Carolyn Pence | Female | Layton, UT | 1 |
| Eric Pence | Male | Eagle, CO | 1 |
| Jessica Pendleton | Female | Johnston, IA | 1 |
| John Pennington | Male | Denver, CO | 1 |