Colleen De Reuck XC Classic
Saturday, October 31, 2026, first start 9:00 AM, in Boulder (1400 Knox Dr). Distances: 1K, 3K, 5K. Entry from $15 to $25.
- Date
- Saturday, October 31, 2026
- Start time
- 9:00 AM (earliest wave)
- Location
- 1400 Knox Dr, Boulder, CO 80305
- Area
- Boulder County, Denver & Boulder
- Distances
- 1K3K5K
- Course
- Trail (dirt or single-track on at least part of the course)
- Price
- $15 to $25 plus the platform's processing fee
- Next price increase
- None published
- Registration
- Open. Opened May 15, online signup closes Saturday, October 31, 2026
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details.
Register on RunSignup →Race website
Course and race notes
The Colleen De Reuck Cross Country Classic is a XC meet honoring one of the world's greatest ever distance athletes and Boulder local, Colleen De Reuck.
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.