Trail running Race Calendar in Colorado, United States

Never Summer 100km & 60km

Walden, Colorado, United States

24 Jul, 2026 (Fri) – 26 Jul, 2026

$210.00 - $440.00

Trail running

Ultra

Beas Knees Citizens' Race and National High School Trail Championships

Salida, Colorado, United States

25 Jul, 2026 (Sat)

$25.00

Trail running

8.7K

Living Journeys Summit Hike

Crested Butte, Colorado, United States

25 Jul, 2026 (Sat)

$40.00

Trail running

Hike

World Championship Pack Burro Race

Fairplay, Colorado, United States

26 Jul, 2026 (Sun)

$70.00

Trail running, Running

49.9K 24.1K

Kennebec Mountain Run

Hesperus, Colorado, United States

01 Aug, 2026 (Sat)

$75.00

Trail running

24.1K

Sheep Mountain Trail Runs

Fairplay, Colorado, United States

01 Aug, 2026 (Sat)

$100.00 - $180.00

Trail running

22.9K Ultra

Eltuck Valley 5K - Lory Summer Trail Series

Fort Collins, Colorado, United States

04 Aug, 2026 (Tue)

$25.00

Running

5K

Pat's Pony Express

Woodland Park, Colorado, United States

08 Aug, 2026 (Sat)

$65.00 - $80.00

Trail running

12.9K 25.7K 22.5K

Into the Hills Eltuck 10k

Bellvue, Colorado, United States

11 Aug, 2026 (Tue)

$25.00

Trail running

10K

The Cheyenne Mountain Run

Colorado Springs, Colorado, United States

15 Aug, 2026 (Sat)

$45.00 - $95.00

Trail running

5K 10K 22.5K

Into the Hills Eltuck 5k

Bellvue, Colorado, United States

18 Aug, 2026 (Tue)

$25.00

Trail running

5K

Eltuck Valley 12K - Lory Summer Trail Series

Bellvue, Colorado, United States

25 Aug, 2026 (Tue)

$25.00

Trail running

12K