Nederland
Trail Running Calendar near Nederland 2026-2027
Explore the top trail runs near Nederland for 2026-2027! We've gathered 28 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
November 2026
Trail races in Longmont on November 14, 2026 offering Half Marathon, 10K and 5K on new mostly flat courses along the St. Vrain Greenway.
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
A limited 40-runner mountain ascent at Thumb Open Space: repeated 2 km laps with 540 ft gain, poker-chip turnarounds, and patch milestones for 14, 18, and 26 ascents.
Free 2.8 mi festive run in Broomfield that finishes with breakfast at La Belle French Bakery and is open to all ages.
Santa Claus Run in Louisville CO on Dec 12 offers 5k, 10k, a half marathon and a kids race with an expo, festive finish gifts and on-course amenities.
A 10K at the YMCA of the Rockies on December 19, 2026, with trail and paved sections and nearly 1,500 feet of climbing; breakfast and a day pass included.
January 2027
February 2027
A winter bike rally and trail run in Lyons, Colorado offering multiple run and ride distances plus an afterparty with food, music and saunas.
April 2027
May 2027
Trail races at YMCA of the Rockies on May 22, 2027 featuring 10K, 25K, and a 50K with 6,000 feet of gain on mostly runnable singletrack.
June 2027
A mixed gravel-bike and trail-running festival in Lyons, Colorado on June 6, 2027, featuring races from 100K to 5 miles plus relays, BMX, camping and a concert.
Trail races at Granby Ranch Resort in Colorado on June 12, 2027, across multiple distances including a 14-hour Elevation Challenge scored by total elevation climbed. The event uses mountain single-track, aid stations, drop bags, and has a 250 runner..
Estes Park race weekend on June 20, 2027 features marathon, half marathon, Estes Trail Descent 7.75 miles, Longs Peak 5 mile, kids runs, finisher medals and age group awards.
July 2027
A 69-mile three-loop mountain event near Nederland, Colorado with 18,099 ft of climbing, strict weight classes, mandatory high-altitude kit and GPS verification for awards.
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.
Point-to-point and loop mountain trail races in Winter Park, Colorado offering 50K, 21K and 10K with limited fields, aid stations, and age-group awards.