Denver Colfax Marathon
Updated
Sunday, May 16, 2027, in Denver. Distances: 10 miles, Half marathon, Marathon.
- Date
- Sunday, May 16, 2027
- Start time
- Not published yet
- Location
- Denver, CO
- Area
- Denver, Denver & Boulder
- Distances
- 10 milesHalf marathonMarathon
- Course
- Road or path
- Price
- See the registration page
- Next price increase
- None published
- Registration
- Open on the official site
How to register
Registration is on the race's official site.
Register on the official site →
Course and race notes
Sunday of Colfax Marathon weekend: marathon, half marathon, Urban 10 Miler and relays. The Colfax 5K is Saturday, May 15.
From the organizer's page. Check the race website for the course map and parking.
Source: Official site (organizer's page), checked Saturday, October 17, 2026. Details can change; the registration page is the final word.