Searched 21 events from September 17, 2005 to September 20, 2025
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Rich Cook | Male | 1 | |
| Megan Cooke | Female | Boulder, CO | 2 |
| Ryan Cooper | Male | Boulder, CO | 1 |
| Karen Copeland | Female | 3 | |
| Eric Coppock | Male | Longmont, CO | 9 |
| Logan Coppock | Male | 1 | |
| Jordan Corbman | Male | 1 | |
| Charles Corfield | Male | 1 | |
| Erik Corkran | Male | 2 | |
| Blaise Coslick | Male | Boulder, CO | 1 |
| Katherine Cote | Female | Boulder, CO | 1 |
| Robbie Courter | Male | Boulder, CO | 1 |
| Joe Courtney | Male | 1 | |
| Priscilla Courtney | Female | 1 | |
| Wayne Cousineau | Male | 2 | |
| Dylan Cousins | Male | Golden, CO | 2 |
| Tyler Cox | Male | Denver, CO | 2 |
| Matt Craft | Male | Boulder, CO | 1 |
| Courtney Crespin | Female | 1 | |
| Lucas Crespin | Male | 3 | |
| Wayne Crill | Male | 1 | |
| Brian Crim | Male | Longmont, CO | 3 |
| Jennifer Crim | Female | Boulder, CO | 1 |
| Ryan Crisp | Male | 3 | |
| Sarah Crump | Female | 1 | |
| Casey Cusano | Female | 1 | |
| Daniel Czarnecki | Male | Lafayette, CO | 2 |
| Jackson Czarnecki | Male | Lafayette, CO | 1 |
| Debbie Dalrymple | Female | 1 | |
| Jack Daly | Male | Denver, CO | 1 |
| Graeme Danforth | Male | Boulder, CO | 1 |
| Craig Daugherty | Male | 2 | |
| Julie Daugherty | Female | 1 | |
| Brenna Davis | Female | Boulder, CO | 1 |
| Flannery Davis | Female | Boulder, CO | 1 |
| Kate Davis | Female | Boulder, CO | 7 |
| Molly Day | Female | Boulder, CO | 1 |
| Bryan Dayton | Male | Boulder, CO | 3 |
| Justine DeCoste | Female | Boulder, CO | 1 |
| Aaron Dehne | Male | Boulder, CO | 1 |
| Tessie DeLaney | Female | 5 | |
| Mathew DeNeen | Male | Boulder, CO | 1 |
| Ryan Denman | Male | Erie, CO | 3 |
| Nodin De Saillan | Male | Boulder, CO | 1 |
| Emma Dhimitri | Female | Boulder, CO | 1 |
| Harry Dieterich | Male | Arvada, CO | 1 |
| Adriana Diminico | Female | Golden, CO | 1 |
| Sophie Dirnberger | Female | Hopkins, MN | 1 |
| Gino DiSciullo | Male | Lafayette, CO | 1 |
| Sara Distin | Female | Eldorado Springs, CO | 3 |