Searched 19 events from September 17, 2005 to September 16, 2023
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Nina Carson | Female | Aurora, CO | 1 |
| Marcel Casado | Male | Longmont, CO | 1 |
| Daniel Castillo Oropeza | Male | Louisville, CO | 1 |
| Arthur Cavanagh | Male | Boulder, CO | 1 |
| Joseph Cavarretta | Male | Boulder, CO | 1 |
| Hank Caylor | Male | 3 | |
| Miguel Cebrian | Male | Louisville, CO | 2 |
| Christine Chang | Female | Boulder, CO | 1 |
| Samir Chopra | Male | Broomfield, CO | 3 |
| Ishwar Choudhary | Male | Boulder, CO | 1 |
| John Christie | Male | Superior, CO | 10 |
| Zach Chupa | Male | Boulder, CO | 1 |
| Robert Church | Male | 1 | |
| Lindsay M Clark | Female | 1 | |
| Noel Clark | Female | Boulder, CO | 1 |
| Tonya Clement | Female | 2 | |
| Derek Clemmensen | Male | Golden, CO | 5 |
| Sarah Clemmensen | Female | Golden, CO | 1 |
| Patrick Cole | Male | Denver, CO | 1 |
| Dave Colvin | Male | Louisville, CO | 1 |
| Nicklaus Combs | Male | Boulder, CO | 1 |
| Brian Condon | Male | Boulder, CO | 1 |
| Spencer Cone | Male | Louisville, CO | 1 |
| Mike Conroy | Male | 1 | |
| Ellen Considine | Female | 3 | |
| Wyett Considine | Male | Boulder, CO | 1 |
| Amber Constant | Female | Boulder, CO | 1 |
| Keith Conway | Male | Boulder, CO | 1 |
| Fred Coogan | Male | 4 | |
| 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 |