Running Races in Denver, Colorado

52 upcoming races in Denver, updated nightly. For radius search from your exact zip, use the Race Finder.

Racing in Denver: what the calendar looks like

There are 52 upcoming races on the Denver calendar over the next 12 months, with at least one in every month. September is the busiest month, with 10 races. That makes Denver the busiest racing city in Colorado.

Of those, 46 offer a 5K, 16 offer a 1 Mile and 13 offer a 10K. The next marathon on the calendar is Denver, CO Galloway Training Program on September 5, which also runs a half marathon. Where fees are published, the median entry in Denver is $23, below the Colorado median of $30.

Close enough for a race-day drive: Aurora (11 races, 9 miles), Littleton (18 races, 10 miles), Arvada (17 races, 10 miles).

Races by month

September 2026

October 2026

November 2026

December 2026

January 2027

February 2027

March 2027

April 2027

May 2027

June 2027

July 2027

August 2027

Where to stay in Denver

Race-weekend hotel search, dates prefilled for check-in the night before.

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Planning a race

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