Trail Run races in Colorado

Looking for trail races near you in Colorado? There are 12 upcoming trail races listed here. The next one is RexRun For PAWSitivity 2026 Trail Run/Walk on Sat, Aug 29, 2026 at Arapahoe County Fairgrounds — see the full list below for dates, venues, and registration links, and browse trail races in other cities.

All 5K (150) 10K (70) Half Marathon (56) Marathon (7) Trail Run (12)

Sat, Aug 29, 2026 RexRun For PAWSitivity 2026 Trail Run/Walk Arapahoe County Fairgrounds · Aurora, CO · From $20 5KTrail Run Trail
Sat, Sep 5, 2026 Raising the Barr 13401 Picadilly Rd · Brighton, CO · From $55 Trail Run Trail
Fri, Sep 11, 2026 Flaming Foliage Relay - Idaho Springs to Buena Vista 1545 Miner Street · Idaho Springs, CO · From $623 Trail Run Trail
Sun, Sep 13, 2026 Buffalo Bicycle Classic University of Colorado Boulder · From $125 Half MarathonTrail Run Trail
Sat, Oct 3, 2026 HRCA Wildcat Mountain Trail Races 11033 Monarch Blvd · Littleton, CO · From $10 10KTrail Run Trail
Sun, Oct 4, 2026 Evergreen Mountain Weeknight Race 5300 S Olive Rd, · Evergreen, CO · From $25 Trail Run Trail
Sat, Oct 10, 2026 Suffer Better 10th Annual Fall Trail Runs Staunton State Park · Pine, CO · From $25 5KTrail Run Trail
Sat, Oct 17, 2026 Indian Creek Trail Runs 2499 Pine Creek Rd · Sedalia, CO · From $30 5KTrail Run Trail
Sat, Oct 17, 2026 The Great Trailhead Foot Race 5 & 10 Miler 15600 W Morrison Rd. · Lakewood, CO · From $55 Trail Run Trail
Sat, Nov 7, 2026 Turkey Trails- Denver Chatfield State Park · Littleton, CO · From $17 5K10KHalf MarathonTrail Run Trail
Sat, Dec 5, 2026 Sawmill Trail Runs 12102 S Elk Creek Rd · Pine, CO · From $60 Trail Run Trail
Sat, May 1, 2027 Greenland Trail Races 1532 E Noe Rd · Larkspur, CO · From $25 5KTrail Run Trail

Quick answers

When is the next trail race in Colorado?

The next Trail Run in Colorado is RexRun For PAWSitivity 2026 Trail Run/Walk on Sat, Aug 29, 2026 at Arapahoe County Fairgrounds.

How many trail races are coming up near me in Colorado?

There are currently 12 upcoming trail races listed in Colorado, each with a date, venue, and direct registration link.

What's the cheapest Trail Run in Colorado?

The lowest listed entry right now is HRCA Wildcat Mountain Trail Races at from $10. Registration prices usually rise as race day nears, so early entry is cheapest.