Searched 27 events from September 24, 1999 to September 26, 2025
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Cody Blackett | Male | Hyde Park, UT | 1 |
| Amie Blackham | Female | Draper, UT | 10 |
| Brian Blair | Male | Silverado, CA | 1 |
| Chandler Blake | Male | Saratoga Springs, UT | 2 |
| Mark Blakeley | Male | Norton, MA | 2 |
| Ashley Blakemore | Female | Conifer, CO | 1 |
| Conan Blakemore | Male | Conifer, CO | 1 |
| Keith Blanchette | Male | Anchorage, AK | 1 |
| Jim Bledsoe | Male | Logandale, NV | 1 |
| Ben Blessing | Male | Nampa, ID | 1 |
| Christophe Block | Male | Roland, AR | 1 |
| Keith Blom | Male | San Jose, CA | 1 |
| Adam Blum | Male | Santa Cruz, CA | 1 |
| Quin Boardman | Male | Bountiful, UT | 1 |
| Mike Boeing | Male | Durango, CO | 1 |
| Filip Boelen | Male | Flagstaff, AZ | 1 |
| Benjamin Boese | Male | Gypsum, CO | 1 |
| Jeremy Bohnett | Male | McKinney, TX | 1 |
| Jill Bohney | Female | Salt Lake City, UT | 5 |
| Max Bohning | Male | Longmont, CO | 1 |
| Kirk Boisseree | Male | Fremont, CA | 1 |
| Keiren Bond | Female | Portland, OR | 1 |
| Robert Bondurant | Male | Chimacum, WA | 2 |
| Josh Bonkowsky | Male | Salt Lake City, UT | 2 |
| James Bonnett | Male | Phoenix, AZ | 1 |
| Thomas Boothby | Male | Laramie, WY | 1 |
| Kay Borleis | Female | Boulder, CO | 1 |
| Mason Boswell | Male | Woodbury, MN | 1 |
| Joseph Bouchey | Male | Las Vegas, NV | 1 |
| Elizabeth Bouquet | Female | Colorado | 1 |
| Mark Bowling | Male | South Salt Lake, UT | 1 |
| Sean Bowman | Male | Sunnyvale, CA | 1 |
| Vince Bowman | Male | Harrisonburg, VA | 1 |
| Chris Boyack | Male | 1 | |
| David Boyd | Male | Fort Collins, CO | 1 |
| Robert Boyden | Male | Salt Lake City, UT | 1 |
| Steve Boyenger | Male | Boise, ID | 3 |
| Daniel Boyer | Male | West Jordan, UT | 2 |
| Chad Brackelsberg | Male | Park City, UT | 1 |
| Kelly Bradbury | Female | Smithfield, UT | 2 |
| Cat Bradley | Female | Goleta, CA | 1 |
| Joshua Bradley | Male | Holladay, UT | 1 |
| King Bradley | Male | Rockford, IL | 1 |
| Sean Bradley | Male | Carrboro, NC | 1 |
| Casey Brady | Female | Park City, UT | 1 |
| Colin Brady | Male | Grand Junction, CO | 1 |
| Erin Brady | Female | Fort Wayne, IN | 3 |
| John Brady | Male | Park City, UT | 2 |
| Scott Brady | Male | Salt Lake City, UT | 1 |
| Cody Braford | Male | Silverton, CO | 1 |