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Running calendar near Boulder 2024-2025

Explore the top running races near Boulder for 2024-2025! We've gathered 85 exciting races in the area. Check out our detailed list below to find your next local race.

October 2025
Oct
18
Saturday

The Great Trailhead Foot Race 10 Miler

Trail Run 5 km 10 mi
Oct
26
Sunday

Ghosts and Goblins 10K

5 km 10 km
November 2025
Nov
1
Saturday

City Park 5k for Pancreatic Cancer Research

5 km
Nov
2
Sunday

All-Out Kooky-Spooky

5 km 10 km 21 km
Nov
15
Saturday

Louisville Trail Race

Trail Run 5 km 10 km 13 mi