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Colorado Running calendar 2024-2025

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Explore the best running races in Colorado for 2024-2025! Our updated list features 215 exciting races across the state. Find your next race in Colorado below and join the running community at these great events!

October 2025
Oct
11
Saturday

The Long View Marathon

5 km 13 mi 26 mi
Oct
11
Saturday

Breckenridge Road Marathon

10 km 13 mi 26 mi
Oct
12
Sunday

Westy Half

5 km 13 mi
Oct
18
Saturday

Indian Creek Trail Runs

Trail Run 5 mi 15 mi 55 km 50 mi
Oct
18
Saturday

The Great Trailhead Foot Race 10 Miler

Trail Run 5 mi
Oct
25
Saturday

Foundry Halloween 5k

5 km
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
1
Saturday

Turkey Trails

5 km 10 km
Nov
2
Sunday

Turkey Trails Denver

5 km 10 km
Nov
2
Sunday

All-Out Kooky-Spooky

5 km 10 km 13 mi
Nov
8
Saturday

Bingo! Trail Party

Trail Run 10 mi 20 mi 42 mi 54 mi
Nov
8
Saturday

Kessel Run Ultra

Trail Run 10 mi 20 mi ... 40 mi 50 mi
Nov
15
Saturday

Louisville Trail Race

Trail Run 5 km 10 km 13 mi
Nov
27
Thursday

Pelican Lakes Turkey Trot

5 km