Explore the best trail runs in the United States for 2026-2027! Our updated list features 4043 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
An overnight time based trail running event on Casper Mountain in August 2026 with 4 hour and 12 hour solo options and a 12 hour 4 person relay on forested trails near the Nordic stadium.
A loop-based Last Man Standing race in Inkom, Idaho, run on a 1.1 mile trail with about 240 ft of climb per loop. Runners must complete each loop within 20 minutes and are eliminated until one remains.
A high-mountain 100 mile ultramarathon north of Durango, Colorado, with about 19,000 ft of climbing and a 38 hour cutoff. The 2026 race is sold out; satellite tracking and specific mandatory gear are required.
A multi day timed trail event on a Winchendon farm using a roughly two mile loop. Runners choose from six hour day or night, 12 hour, 24 hour, or 48 hour formats under the Sturgeon Moon.
A Trifecta obstacle race weekend at Dillingham Ranch on Oʻahu’s North Shore featuring Sprint, Super, Beast, Ultra, and Kids Race across coastal trails and ridgelines. An obstacle workshop and spectator access are included.
A timed endurance event at Lincoln Park on August 15, 2026, featuring a repeated two mile loop with 18, 12, 6, and 3 hour formats, team competition, and Kids Loopy Races. The race is cupless and supports on-course snacks and food options.
A mid-August trail running weekend in Grandview, Tennessee with looped races from one hour to 24 hours, free tent camping and a glamping auction; proceeds support Flying Pigs Sanctuary.
A last-person-standing backyard ultra at Camp 7 in Riverside State Park with separate running and rucking races on repeating hourly loops. Runners use a 4.1667 mile loop and ruckers a 2.2 mile loop until one finisher remains.
A mountain trail race in Alta, Utah covering 7.1 miles and about 2,545 ft of vertical gain, capped at 500 runners. The route climbs to Mt Baldy with aid stations and marked alpine terrain.
Run the scenic Medicine Bow Rail Trail and Lake Owen at high elevation in Wyoming's national forest. This event offers both marathon and half marathon distances, all on a historic pathway. The 2026 edition is scheduled for August 15.
A Scottish Highlander themed obstacle race in Pingree Grove, Illinois featuring 3K family, 5K and 15K heats with 20 to 30 obstacles, plus a torch lit night race and a haunted 5K. Spectator fee on-site is $10 and parking is free.
Terrain Race in Dallas Fort Worth on August 15, 2026 is a mud and obstacle 5K at Village Creek Motocross Park with a pre-race festival, packet pickup, and a finish line festival featuring food and sponsor activations.