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Obstacle Race Calendar near Boulder Reservoir 2025-2026

Explore the top obstacle runs near Boulder Reservoir for 2025-2026! We've gathered 85 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
27
Saturday

Candy Cane Course - Denver

5 km 12 km
January 2026
Jan
1
Thursday

Resolute Runner 5k

5 km
Jan
10
Saturday

Polar Prowl

5 km 10 km 13 mi
February 2026
Feb
14
Saturday

Heart Throb 5K

5 km
April 2026
Apr
25
Saturday

Runs With Scissors Races

13 mi 26 mi 50 km
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