Denver Colfax Marathon

MAY
15-17
2026
Read all about the Denver Colfax Marathon on 15-17 May 2026 in Denver.
15-17 May 2026
26 miles 13 miles 10 miles 5 kilometers

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About the race

Denver Colfax Marathon Weekend, in Denver, Colorado, is billed as Denver's only marathon and offers Marathon, Half Marathon, Urban 10 Miler, Marathon Relay, and a 5K on the Runway. It’s promoted as the Rockies’ largest marathon weekend, featuring a two-day Expo at Empower Field at Mile High and a Sunday race through downtown landmarks. The Half Marathon includes a Denver Zoo Mile with animal spectators, while the Urban 10 Miler is a point-to-point course finishing in City Park.

Finisher festivities include a post-race party, live music, and charity-focused relay divisions; 2026 marks the 20th year. Visit the organization's website for the most recent information.

26 mi
Marathon Relay
26 mi
Marathon
13 mi
Half Marathon
10 mi
Urban 10 Miler
5 km
5k on the Runway

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