Colorado Running calendar 2024-2025

Explore the best running races in Colorado for 2024-2025! Our updated list features 130 exciting races across the state. Find your next race in Colorado below and join the running community at these great events!

July 2025
Jul
20
Sunday

Kendall Mountain Run

Trail Run 11 km 12 mi
Jul
26
Saturday

Pikes Peak Ultra

Trail Run 20 km 30 km 50 km 50 mi
Jul
26
Saturday

Creede 100

Trail Run 100 mi
Jul
26-28
Sa - Mo

Never Summer 100Km

Trail Run 60 km 100 km
Jul
28
Monday

The Summit 200

Trail Run 200 mi
August 2025
Aug
1-2
Fr - Sa

Rocky Mountain Half Marathon

5 km 13 mi
Aug
2
Saturday

Sheep Mountain Ultras

Trail Run 13 mi 50 km 50 mi
Aug
2
Saturday

All-Out Runapalooza

5 km 10 km 13 mi
Aug
4-9
Mo - Sa

Transrockies Run

Trail Run 120 mi
Aug
6-27
We - We

Lory Summer Trail Series

Trail Run 5 km 10 km 12 km
Aug
8
Friday

High Five 100 - Lake City, CO

Trail Run 100 mi
Aug
16-17
Sa - Su

Leadville Trail 100 Mile Run

Trail Run 100 mi
Aug
16
Saturday

Mt. Sneffels Marathon

10 km 13 mi 26 mi
Aug
23
Saturday

Thirsty 13 Half Marathon

13 mi
Aug
24
Sunday

Staunton Rocks

Trail Run 13 mi 26 mi
Aug - Sep
28-1
Th - Mo

Front Range Ultra Dayze

Trail Run
Aug
30
Saturday

Creede Mountain Run

Trail Run 2 mi 12 mi 22 mi 50 km
Aug
30
Saturday

Grand Traverse Mountain Run

Trail Run 40 mi
September 2025
Sep
1
Monday

Labor Day Half Marathon

5 km 10 km 13 mi
Sep
6
Saturday

Cirque Series - Arapahoe Basin

Trail Run 9 mi