Marathons in Colorado

Upcoming marathons in Colorado. Use filters to quickly find races by month, city or race type.

More races:ย USA running calendar

Date RaceDistanceLocationhf:tax:monthandyearhf:tax:cityhf:tax:typerace
03/08/2025Run Through Time Trail Marathon13.1M, 26.2M, 2MSalida CO03-marchsalida-cotrail
04/26/2025Runs with Scissors Races13.1M, 26.2M, 50KBrighton CO04-aprilbrighton-cotrail
05/04/2025Colorado Marathon10K, 13.1M, 26.2M, 5KFort Collins CO05-mayfort-collins-coroadrace
05/10/2025Valkyrie Trail Race13.1M, 26.2M, 30K, 4M, 50K, 8MColorado Springs CO05-maycolorado-springs-cotrail
05/17/2025Ram Party15K, 24K, 50K, 55M, 60KColorado Springs CO05-maycolorado-springs-cotrail
05/17/2025Denver Colfax Marathon10M, 13.1M, 26.2MDenver CO05-maydenver-coroadrace
05/25/2025Spirit Trail Race13.1M, 26.2M, 9KBuena Vista CO05-maybuena-vista-cotrail
06/01/2025Steamboat Marathon10K, 13.1M, 26.2MSteamboat Springs CO06-junesteamboat-springs-coroadrace

Colorado Race Calendar

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