Colleen Marxer has 2 recorded races from Parker, Colorado, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-08-10 | 2025 Life Time Leadville 10K presented by La Sportiva | 10K | 1:15:31 | 503 |
| 2024-08-11 | 2024 Life Time Leadville 10K presented by La Sportiva | 10K | 1:11:42 | 458 |