Colfax Marathon
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Race Information
The Colfax Marathon is Denver's largest running weekend. Runners get to pick from the marathon, marathon relay, half marathon, or urban 10 miler and enjoy Denver’s iconic landmarks. Just getting started on the running scene? There's a 5k for that. Finish your 26.2 into a huge post-race party with live music, food, & drinks.
A Boston Marathon qualifier, the Colfax Marathon should be on the bucket list for every runner!
Run Pick of the Month - Slacker Half Marathon
Over 2,000 feet of descent at this downhill half marathon happening June 22, 2024.
Slacker Half Marthon runners follow an exhilarating point to point course from the base of Loveland Ski Area (10,630 ft) to the post-race party in historic Georgetown (8,400 ft).
Participants will receive a Long Sleeve Tech Shirt, a Finisher Medal, and the joy of indulging in one free beer (non-alcoholic option available).
One addition that we really like is that they offer free downloadable race photos.
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Pace Calculator
Find your running pace and splits, and learn if you can outrun dangerous animals with the RunGuides run pace calculator.