Searched 18 events from May 13, 2017 to May 10, 2025
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Garrett Bischof | Male | Fort Collins, CO | 1 |
| Brad Bishop | Male | Denver, CO | 1 |
| Matthew Bitters | Male | Golden, CO | 1 |
| Mark Bivins | Male | Denver, CO | 1 |
| Garrett Black | Male | Kaysville, UT | 1 |
| Catherine Bladow | Female | Fort Collins, CO | 1 |
| Cayti Blair | Female | Loveland, CO | 1 |
| Whit Blair | Male | Grand Junction, CO | 1 |
| Heather Blatchley | Female | Niwot, CO | 3 |
| Robert Blatchley | Male | Niwot, CO | 1 |
| Andy Blatecky | Male | Golden, CO | 1 |
| Dudley Blauwet | Male | Louisville, CO | 6 |
| Jarrett Bleicher | Male | Fort Collins, CO | 1 |
| Katie Bliss | Female | Bayport, MN | 1 |
| Joanna Bloom | Female | Louisville, CO | 1 |
| Faye Blumberg | Female | Denver, CO | 1 |
| Rebecca Blumberg | Female | Fort Collins, CO | 1 |
| Jamie Blumentritt | Female | Eagan, MN | 1 |
| Antonella Bly | Female | Broomfield, CO | 1 |
| Louis Bodin | Male | Boulder, CO | 1 |
| Taylor Bodin | Male | Estes Park, CO | 1 |
| Todd Bogdaschewskyi | Male | Buffalo Creek, CO | 2 |
| Andrew Bogus | Male | Boulder, CO | 1 |
| Olivia Bojan | Female | Fort Collins, CO | 1 |
| Lauren Boldt | Female | Golden, CO | 1 |
| Jeff Bollman | Male | Loveland, CO | 1 |
| Colleen Bolls | Female | Boulder, CO | 1 |
| Michael Bolt | Male | Hendersonville, TN | 1 |
| Suzanna Bon | Female | Sonoma, CA | 1 |
| Erin Bonthron | Female | Aurora, CO | 1 |
| Brent Boos | Male | Boulder, CO | 1 |
| Isabelle Booth | Female | Fort Collins, CO | 1 |
| Bryan Boots | Male | Boulder, CO | 1 |
| Rebecca Boozan | Female | Boulder, CO | 1 |
| Monica Borges | Female | Fort Collins, CO | 1 |
| Kay Borleis | Female | Boulder, CO | 4 |
| Marek Borowiec | Male | Fort Collins, CO | 1 |
| Lucas Bortoff | Male | Denver, CO | 1 |
| Courtney Bouchet | Female | Fort Collins, CO | 2 |
| Emily Bourgeois | Female | Lafayette, CO | 1 |
| Lacey Bourgois | Female | Colorado Springs, CO | 1 |
| Caroline Bourland | Female | Boulder, CO | 1 |
| Kalee Bowen | Female | Longmont, CO | 1 |
| Sharon Bowles | Female | Severance, CO | 2 |
| David Boyd | Male | Fort Collins, CO | 2 |
| Brian Brabant | Male | Lakewood, CO | 2 |
| Ryan Brackley | Male | Boulder, CO | 1 |
| Addie Bracy | Female | Longmont, CO | 3 |
| Joel Braden | Male | Chicago, IL | 3 |
| Kristin Bradfield | Female | Fort Collins, CO | 2 |