All races in Colorado

Upcoming marathons in Colorado

9 marathons are coming up in Colorado, out of 382 races on the statewide calendar. Compare dates, distances and locations, then get ready with a personalized training plan.

9 upcoming races

May 2027

May 2, 2027 Colorado Marathon📍 Colorado Springs, CO26.2 mi · 13.1 mi · 6.2 mi · 3.1 mi
May 15, 2027 Denver Marathon📍 Denver, CO26.2 mi · 26.2 mi · 13.1 mi · 6.2 mi

June 2027

Jun 6, 2027 estimated dateSteamboat Marathon, Half Marathon and 10K📍 Steamboat Springs, CO26.2 mi · 13.1 mi · 6.2 mi
Jun 6, 2027 estimated dateSteamboat Marathon📍 Steamboat Springs, CO26.2 mi · 13.1 mi · 6.2 mi

July 2027

Jul 17, 2027 Aspen Valley Marathon📍 Aspen, CO26.2 mi · 13.1 mi · 3.1 mi

August 2027

Aug 15, 2027 estimated dateBoulder Rez Marathon📍 Boulder, CO26.2 mi · 18.6 mi · 13.1 mi · 6.2 mi

September 2027

Sep 26, 2027 estimated dateBoulderthon Boulder Marathon📍 Boulder, CO26.2 mi · 13.1 mi · 6.2 mi · 3.1 mi

October 2027

Oct 9, 2027 estimated dateBreckenridge Road Marathon📍 Breckenridge, CO26.2 mi · 13.1 mi · 6.2 mi · 3.1 mi
Oct 31, 2027 estimated dateRim Rock Marathon📍 Grand Junction, CO26.2 mi · 13.1 mi

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