in 4 days
The Long View Marathon
Fort Collins, CO625 ft gain
MarathonHalf Marathon+1
Open until Oct 11from $45
5K Races Near Denver, CO
As of October 6, 2026, Crewable lists 38 upcoming 5K races near Denver, CO from October 2026 to May 2027. The next is ASDAsh 5K to Beat Tooth Decay on October 10 in Aurora, CO. Registration is open for 33.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
1 aid
4 aid
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6 aidRace calendar
October 2026
25 racesCoffee Lovers Run 5K/10K/13.1 DENVER/AURORA
Centennial, COHalf Marathon10K+2Open until Oct 10from $30Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
Centennial, COHalf Marathon10K+2Open until Oct 31from $30
November 2026
11 racesCity Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Denver, CO10K5K+1Open until Nov 7from $23Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA
Centennial, COHalf Marathon10K+2Open until Nov 14from $30
April 2027
1 raceMay 2027
1 raceQuick answers
What is the next 5K race near Denver, CO?
ASDAsh 5K to Beat Tooth Decay, on Saturday, October 10, 2026, in Aurora, CO. Distances: 5K.
What is the closest 5K race to Denver?
Living Water 5K and Family Fun Walk/Jog in Denver, CO, about 1 mile from Denver, on October 17, 2026.
How many 5K races near Denver, CO have open registration?
33 of the 38 list registration as open as of October 6, 2026, including ASDAsh 5K to Beat Tooth Decay, Breckenridge RunFest and Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA.
What is the busiest month for 5K races near Denver, CO?
October 2026, with 25 of the 38. November 2026 follows with 11.
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