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Trail Running Calendar near Littleton 2026-2027

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Explore the top trail runs near Littleton for 2026-2027! We've gathered 39 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

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
Trail races at Greenland Open Space near Larkspur offer four dirt-trail distances with looped courses, aid stations, timing, and awards.
Invitation only ultratrail near Sedalia, CO focused on map and compass navigation, minimal aid, and loop options from about 24 to 100 miles with strict self reliance.
A May 30 trail ultra in Buffalo Creek, Colorado offering 50 Mile and 50K courses on mostly singletrack with significant elevation and limited crew access.
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
Multi-distance trail races at Barr Lake State Park in Brighton CO on dirt loop and out-and-back courses with lake and Front Range views.
Overnight trail endurance event in Highlands Ranch with solo ultramarathon options and 3 or 5 person 12 hour relays on 10.3 and 5.3 mile loops under the full moon.
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
Trail races at Standley Lake in Westminster CO offering distances from 6K to 50K on 100% dirt courses with aid stations and parking at Wayne Carle Middle School.
September 2027
Expo Park XC on September 20, 2026 is an old school grass cross country with creek crossings, bale jumps, a 5k open race and multiple youth age group races.
Trail event at Staunton State Park on September 25, 2027, offering 6 mile and 14 mile options with weighted categories and proceeds to the Special Forces Foundation.
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