Trail Running Calendar United States 2026-2027

A community trail running event in downtown Ruidoso offering 13.8, 8.5 and 4 mile courses plus a kids dash, refill stations, finisher medals, age group awards, and on-site packet pick-up.

Multi-hour looped trail challenges at Blackhawk Ski Club in Middleton, WI, with individual and team relay options, plus a 1.7 mile fun run that highlights the course features and terrain.

Winona Forest Backyard Ultra in Mannsville NY uses a repeating 4.167 mile loop every hour. Runners return to the start within the hour to continue and the last runner standing wins.

Trail races at Oak Mountain State Park near Pelham, AL offering 20-mile and 10-mile courses on a difficult mountain route; runners must carry 15 to 20 oz of fluids and aid stations provide water and Tailwind.

A six hour loop ultra on August 22, 2026 at Jug End State Reservation in Egremont, MA. The event uses a 4.2 mile loop with a .75 mile mini loop in the final hour and benefits the Louison House.

A technical mountain race above Telluride, Colorado, offering five routes from a hill climb to 65 miles, with high-altitude ridgelines and rocky, exposed terrain; intended for experienced mountain runners.

Complete ten 5k runs every two and a half hours in this 24 hour challenge in Brandon. Enjoy hot meals and community activities between laps while striving to earn a custom finisher coffin.

A 5k mud run in Oak Harbor, Ohio with 20+ obstacles and two difficulty lines on many obstacles. Registration includes a T-shirt, wristband, and medal, and 10% of proceeds will go to Ronald McDonald House Charities.

Run the Rails in Elburn, Illinois on August 22, 2026 features a 1-mile fun run plus 4- and 7-mile courses that start and finish at Prairie Park. The routes cross the Union Pacific West rail line and benefit the Elburn Parks Commission.

A high-elevation trail run at Pajarito Mountain in Los Alamos, NM featuring a roughly 10K route that climbs about 1,350 feet to a summit above 10,200 feet and returns on singletrack; the course is marked and hikers are welcome.

A chip timed 5K trail run at Salamonie Lake with wooded, gently rolling trails, a participant pancake breakfast, and fresh sweet corn for sale. Proceeds support Friends of the Upper Wabash Interpretive Services.

Experience a unique trail race in Hampstead featuring a 20k relay and mile challenges. Runners can tackle wooded loops individually or in teams with optional time deductions for beverage consumption at each lap.

Trail races of 5K and 12K take place in the Fort Boise Park Military Reserve Trail System in Boise, Idaho. Proceeds benefit the Bogus Basin Nordic Team and the 12K includes cash prizes plus a post race raffle.

Powder Keg at Carter Park in Kings Mills, Ohio on August 22, 2026 features a roughly 3.5 mile trail loop along the Little Miami River with an old road, an old dam, and a stair climb. Online registration only, fee $23.50.

Test your endurance at this unique trail race in Tully where the coin toss determines your path. Complete as many loops as possible in three hours while alternating directions to stay on your toes.

A mountain trail half marathon and a mostly downhill 5.6K in Arrowhead on August 22, 2026, featuring single-track terrain, a 9,560 ft summit, aid stations on the half, and age-group awards.

A free one-day community festival in Park City featuring a social 4 or 6.5 mile group run, an expo with brand booths, food and a raffle. The event is cupless and hosted at Rendezvous Run with local partners and sponsors.

Trail races of 10K and half marathon in Monte Sano State Park with scenic bluff views, multiple aid stations, a cupless policy, and a 400-runner cap. Participants receive a tri-blend shirt and finisher award.

Trail races of 10K, half marathon and 30K through Henry Cowell Redwoods State Park with single track, sand ridge and river crossings. Aid stations are spaced every five to six miles and the event is cupless.

A day of looped trail events at Comlara near Hudson, IL, with timed options from one hour to twelve hours, a relay race, and an open course option. Runners complete roughly four mile loops and must return each hour to continue.