Chatfield Reservoir
Trail Running Calendar near Chatfield Reservoir 2026-2027
Explore the top trail runs near Chatfield Reservoir for 2026-2027! We've gathered 30 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
November 2026
A no‑fee, self-supported 50K in Golden, Colorado featuring four loops from Parfet Park up South Table, North Table, Mount Galbraith and Lookout Mountain.
December 2026
Free 2.8 mi festive run in Broomfield that finishes with breakfast at La Belle French Bakery and is open to all ages.
January 2027
A winter 21.6 mile out and back to Devil's Head near Sedalia, CO, run on the closed Rampart Range Road with aid stations, mandatory gear, and a 200-runner field.
February 2027
March 2027
Winter endurance laps on a marked 4.6 mile loop at Staunton State Park with 3, 6, 12 and 24 hour formats and fundraising for air quality nonprofits.
April 2027
A backyard ultra on a 4.167 mile dirt loop at Greenland Open Space, Larkspur CO, where runners repeat hourly yards until one runner finishes an extra loop alone.
Trail races near Highlands Ranch on dirt and single-track trails, offering 21-mile, half-marathon, 10K and 5K distances with rolling hills and aid station support.
May 2027
Trail ultramarathons in Buffalo Creek, Colorado on May 22, 2027 offering 50 mile and 50 km courses on mostly singletrack with aid stations and limited crew access.
June 2027
An overnight full moon trail event in Highlands Ranch offering 12 hour solo and team relays on a 10.3 mile loop with aid stations and required headlamps.
July 2027
Two Brothers Up and Down in Idaho Springs features steep out and back courses: a 10k with about 1,800 ft ascent and a 5k with about 570 ft.
August 2027
Annual four mile charity run in Eldorado Springs with a scenic out and back course, post-run food and prizes, supporting the Colorado Cancer Foundation.