Trail running Race Calendar in Colorado, United States

Jul

18

TransRockies Run Charity Bibs

Buena Vista, Colorado, United States

Trail running

Ultra

Jul

17

High Lonesome 100

Nathrop, Colorado, United States

Trail running

Ultra

Jul

15

Cow Creek Classic

Steamboat Springs, Colorado, United States

Mountain biking Trail running

8K 6.4K 2.4K 22.5K +5

Jul

01

Howelsen Hustle

Steamboat Springs, Colorado, United States

Mountain biking Trail running

8K 4.8K 1.6K 25.7K +5

Jun

27

The Sunlight Showdown

Glenwood Springs, Colorado, United States

Trail running

5K 10K Half-Marathon

Jun

21

Sunset Trail Running Festival

Boulder, Colorado, United States

Trail running

28K 12K 5K 1K

Jun

17

Steamboat Shredder

Steamboat Springs, Colorado, United States

Mountain biking Trail running

4.8K 3.2K 1.6K 25.7K +6

Jun

14

Garden of the Gods 10 Mile/10K and Trail Run

Colorado Springs, Colorado, United States

Running Trail running

16.1K 10K 4.7K

Jun

10

Gold Roots Trail Series

Idaho Springs, Colorado, United States

Trail running

6.4K

Jun

04

Durango Brewer's Trail Series

Durango, Colorado, United States

Trail running

8K 10K 5K

Jun

03

Emerald Endurance

Steamboat Springs, Colorado, United States

Mountain biking Trail running

4.8K 1.6K Half-Marathon 19.3K +6

May

30

Evergreen Trail Race Series

Evergreen, Colorado, United States

Trail running

5K