Castle Rock
Trail Running Calendar near Castle Rock 2026-2027
Explore the top trail runs near Castle Rock 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.
October 2026
Run the Rocks is a fundraiser at Red Rocks Park and Amphitheatre on October 11, 2026 offering a 5k and a 1.3 mile run and walk to support lung health in Colorado.
A dog-friendly 2.5 mile loop on a hilly dirt path in Lone Tree raising funds for the Colorado Animal Care Foundation, with prizes for participating dogs.
Indian Creek Trail Runs in Sedalia, Colorado on October 17, 2026 offers multiple trail and ultra distances through montane forests, aspen groves, red rock formations and prairie vistas with city views from several viewpoints.
A two-day weekend of mountain bike races for women and girls, a family run and on-site camping near Elbert, Colorado with youth and adult categories.
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 trail race at Sandstone Ranch in Larkspur, CO with 8 mile loops, aid every four miles, and finisher medals for longer efforts.
December 2026
January 2027
A 21.6 mile out and back road race near Sedalia, CO with 2,627 ft of climbing, variable winter road conditions, mandatory gear, and aid at multiple stations.
April 2027
A trail event near Highlands Ranch, Colorado offering 21 mile, half marathon, 10K and 5K courses on mostly dirt single track with rolling hills and aid stations on longer distances.
May 2027