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Half marathons in Denver, Colorado

2026 and 2027 race calendar. 8 upcoming, updated daily.

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8 upcoming
Distance
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March 2027
April 2027
May 2027

Denver Colfax Marathon

Denver, Colorado, United States · May 15 to May 16, 2027
RunningHalf marathonMarathon10 miles
July 2027
August 2027
September 2027
October 2027
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