Upcoming Trail Running Races in Colorado

Endurance Grid lists 19 trail running races in Colorado, from October 2026 to October 2027 across 17 cities.

19
Races
17
Cities

Trail Running Races in Colorado

The trail running race calendar in Colorado is busiest in May, August, and October, with races most often in Colorado Springs and Estes Park.

What trail running is

Trail running takes the sport off the pavement and onto dirt trails, singletrack, fire roads, and mountain paths. It’s quieter than a road race. Depending on the course, you might spend long stretches alone with the woods and your own breathing.

If you already run roads, trails are a natural next step, but they ask for different things: power on the climbs, control on the descents, and attention to every footfall. There’s a distance for every level, from a rolling trail 5K to 100-mile mountain ultras.

Frequently Asked Questions

How many trail running races are in Colorado?
Endurance Grid's Race Calendar lists 19 upcoming trail running races in Colorado across 17 cities, from October 2026 to October 2027.
What trail running distances are offered in Colorado?
Trail running races in Colorado include 1 Mile, 10 Mile, 100K, 10K, 10–20 mi, 2 Mile / 3K, 20–30 mi, 30+ mi, and more distances.
When is trail running season in Colorado?
Trail Running season in Colorado runs spring through fall. Of the upcoming trail running races on Endurance Grid's Race Calendar, the most are in May and August.
Which Colorado cities have trail running races?
Trail running races in Colorado are held in Pine, Woodland Park, Alma, Colorado Springs, Como, Divide, Durango, Estes Park, Fairplay, and Fruita, plus 7 other cities.

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