Colorado 13er (Half Marathon/10k/5k)
Sunday, June 6, 2027, first start 6:30 AM, in Louisville (1200 Dillon Road). Distances: 5K, 10K, Half marathon. Entry from $35 to $65; the Half marathon goes from $65 to $70 after March 1.
- Date
- Sunday, June 6, 2027
- Start time
- 6:30 AM (earliest wave)
- Location
- 1200 Dillon Road, Louisville, CO 80027
- Area
- Denver Suburbs, Denver & Boulder
- Distances
- 5K10KHalf marathon
- Course
- Trail (dirt or single-track on at least part of the course)
- Price
- $35 to $65 plus the platform's processing fee
- Next price increase
- Monday, March 1, 2027: Half marathon $65 → $70
- Registration
- Open. Opened July 1, online signup closes Sunday, June 6, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details. Sign up by March 1 to pay $65 instead of $70.
Course and race notes
The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race!
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.