Littleton
Trail Running Calendar near Littleton 2026-2027
Explore the top trail runs near Littleton for 2026-2027! We've gathered 31 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
MonsterDASH Louisville on Oct 25, 2026 offers a new half marathon plus 5k, 10k and a kids mile with costume contests, expo, and themed runner perks.
A 13.1 mile trail race through the Highlands Ranch Backcountry Wilderness in Douglas County with cash prizes and participant race amenities including a shirt, medal, and pancake breakfast.
A backyard ultra at Bear Creek Lake Park where runners repeat a 4.167 mile loop every hour until one remains, up to 11 laps, with a 50 runner field cap.
November 2026
Six-hour timed loop at Sandstone Ranch in Larkspur, CO on an ~8-mile loop with about 765 ft gain and aid roughly every four miles.
Trail races in Louisville, Colorado on November 14, 2026 offering 13.1 miles, 10K and 5K out-and-back courses on dirt trails with aid stations and drop bag service.
A 50K looped ultra near Golden, CO visiting four peaks from Parfet Park with an unmarked, self supported course and no entry fee.
December 2026
Holiday trail runs in Louisville CO with 5k, 10k, a new half marathon, expo pickup, giveaways, family activities, and a visit from Santa.
January 2027
Inaugural 21.6 mile out and back on Rampart Range Road near Sedalia, CO, with 2,627 feet of climbing, winter road surfaces, mandatory gear, and multiple aid stations.
April 2027
A backyard ultra on public trails in Greenland Open Space near Larkspur, Colorado, run as repeated 4.167 mile loops until one runner remains.
Trail races on April 10, 2027 near Highlands Ranch CO offering 21 mile, half marathon, 10 km and 5 km on mostly dirt single track with aid stations.
May 2027
Trail ultramarathon in Buffalo Creek, Colorado offering 50 Mile and 50K on soft singletrack with aid stations, limited crew access and live tracking.
A Parker, CO trail event featuring a Dipsea-style staggered 10 km and a Kids 1 mile, with a steep incline, rolling terrain, aid stations, and awards for top finishers.
June 2027