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Trail Running Calendar United States 2026-2027

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Explore the best trail runs in the United States for 2026-2027! Our updated list features 4119 exciting trail runs across the country. Find your next trail run in the United States below and join the trail community at these great events!

August 2027
A 6 hour trail endurance challenge in Amarillo where runners complete a 5K each hour for up to six laps, earning patches, a medal, and national leaderboard opportunities.
Backyard Ultra in Bussey IA with hourly 4.167 mile laps and a 12 hour cap where the last runner to complete an extra lap is the winner.
Ninja 5K, 10K and half marathon in Bowling Green KY on 08/28/2027 with listed registration fees and limited medical and water stations on site.
An out-and-back ultramarathon of roughly 35 miles in Lexington NE, plus 10K and 5K on paved and gravel roads with spaced aid stations and one drop bag.
Mountain races around Telluride, Colorado, on old mining roads and alpine tundra, offered in five distances with major elevation gain above 13,000 ft.
Trail races in Brookfield NY on truck and horse trails with 5K, 15K and a 50K ultra that includes 4,600+ feet of gain, on-site food, and course record prizes.
Trail races through a sunflower field near Buhler, KS offering 5K, 1 Mile and a virtual 5K with finisher medals, shirts and a Kansas Maze admission pass.
A point-to-point 50-mile ultramarathon on the Baker Trail in Pennsylvania, with solo and relay entries, varied terrain, 7,100 ft of climbing, and a fourteen-hour cutoff.
A timed, single-day endurance walk on Wachusett Mountain with 7, 14, 21, or 28 mile loops, optional weighted rucks, and aid stations about every 2.5 to 3 miles.
50K multi-loop trail race in Lithia Springs GA with an 8.88 hour clock, chip timing, and summer heat organized by Yeti Trail Runners.
Gravel Worlds Run Series in Lincoln, Nebraska features gravel road races from 5k to 50k with marked courses, aid stations, and sustained rolling hills.
Trail running at Summit Bechtel Reserve near New River Gorge with varied singletrack, steep climbs, and race options including a half marathon and a 10K.
A 50k ultramarathon at Burning Man on August 31, 2027, based at Pink Lightning Camp with on-site bib pickup and support from volunteers.
September 2027
Multiple day timed and distance ultrarun on a 2 mile loop in Loveland with continuous aid, camping, chip timing and finish buckles.
A timed trail event at 1 North Adventure Trails that combines laps with tic-tac-toe games on a bib. Multiple distance options are offered, times are recorded by circuit, and prizes and giveaways are tied to game outcomes.
Trail races in the Dark Divide Roadless Area each September, offering 100 mile, 100K, 50K and 14 mile distances with Cispus Learning Center as race HQ.
Backyard ultra race on a 4.2 mile wooded loop in New Gloucester, Maine, with double track, moderate elevation gain, and a $150 registration fee.
Trail races at McKinney Roughs Nature Park near Cedar Creek TX offering 50 mile, 50K, marathon, half marathon ruck, 8 hour solo or relay and a Last Runner Standing gauntlet
A USATF sanctioned trail 5K at Hidden Valley Regional Park in Reno on Labor Day, with a shirt, finisher medal, awards, and proceeds supporting Azteca FC.
A 46 mile out and back ultramarathon along the Pinellas Trail from St. Petersburg to Tarpon Springs and back to Dunedin on September 4, 2027.
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