🇺🇸 United States
Colorado Trail Running Races 2026
8 upcoming trail and ultra races across Colorado, from 10–162 km with up to 10,360 m of climbing. Browse the 2026 calendar below, or filter the full database by distance and terrain.
2026 race calendar
Open in finder → May 23, 2026
Sage Burner Trail Races
🇺🇸 Gunnison, Colorado
10 / 25 / 50 km 1,200 m climb ★★★★★
Jul 10, 2026
HARDROCK 100 ENDURANCE RUN
🇺🇸 Silverton, Colorado
161 km 10,360 m climb
Jul 10, 2026
Hardrock 100
🇺🇸 Silverton, Colorado
161 km 10,000 m climb ★★★★★
Jul 17, 2026
High Lonesome 100
🇺🇸 Nathrop, Colorado
162 km 7,163 m climb
Jul 25, 2026
Pikes Peak Ultra
🇺🇸 Colorado Springs, Colorado
20 / 30 / 50 / 80 km 3,580 m climb
Aug 15, 2026
Leadville Trail 100 Run
🇺🇸 Leadville, Colorado
161 km 4,800 m climb ★★★★★
Sep 26, 2026
Crested Butte Ultra
🇺🇸 Crested Butte, Colorado
35 / 55 / 80 km 2,530 m climb
Nov 7, 2026
Kessel Run Ultra
🇺🇸 Fruita, Colorado
16 / 32 / 50 / 64 / 80 km 1,580 m climb
Trail running by city in Colorado
Frequently asked
How many trail races are there in Colorado in 2026?
We list 8 upcoming trail and ultra races in Colorado, United States, ranging from 10–162 km.
What is the toughest trail race in Colorado?
The biggest climb on our list is 10,360 m of elevation gain — see the full ranking below and filter by difficulty.
More trail races in United States
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