Explore the best trail runs in the United States for 2026-2027! Our updated list features 4040 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
A trail half marathon in Lynn Woods Reservation on June 21, 2026, run as three identical loops over forested singletrack and carriage roads. The event emphasizes environmental stewardship and uses a centralized start and finish at the main..
A summer and early fall series of four half marathons and a 25K across Colorado in 2026, with options to enter three, four, or all five events; races include Estes Park, Georgetown to Idaho Springs, Mt Sneffels, Ned Ned, and Lead King Loop.
Muddy Princess Boston is a women only 5K obstacle mud run at Kimball Farm in Haverhill on June 21, 2026. The course has 18 plus obstacles and is open to women aged 7 and up who may run, jog or walk.
Experience a scenic 5 mile trail run through Lancaster County Central Park featuring grass paths and water crossings. Compete for age group awards and enjoy a post race prize raffle in a beautiful natural setting.
Field & Forest 5 Miler is a roughly 5 mile trail race on the Crystal Spring property in Brunswick, ME. The mostly off pavement course has single track and wood bridges, and the field is limited to 50 runners.
Three one mile races on track, grass and road at a single venue in Clark, New Jersey. Each mile is timed separately and cumulative times decide overall scoring, with two hours allotted to complete all three.
A trail 5 km race at Libby Hill Forest Trails in Gray, ME on June 21, 2026. Online registration is $15 through June 19, race day registration is $20 and students enter free. Proceeds support trail maintenance and door prize drawings are pla..
A loop-format trail event in Adams, MA where runners choose one, two, or three loops on machine and hand-built singletrack. Proceeds support Thunderbolt Ski Runners' stewardship of trails around Greylock Glen and Mount Greylock.
Mansfield Uphill is a 1.7-mile uphill race at Stowe Mountain Resort on June 21 and October 18, 2026, with proceeds supporting the Mansfield Nordic Pro Team. The field is limited, prizes are awarded at Midway Lodge, and a team Q&A follows.
A free, untimed community trail run on August 26, 2026 at San Andreas Staging Lot in Del Mar, CA. The 3 mile out and back on groomed trail includes a vintage ERS shirt and medal and is limited to 250 participants.
A weekly cross country series offering thirteen 5K races on Tuesday nights from April to July. The event takes place at Central Park in Parsippany and is open to all ages and abilities. Participants can register for the full series or pay f..
A 5k trail run at Gypsum Canyon Wilderness on June 24, 2026 over fire roads and single track with about 350 ft of elevation gain. One aid station at mile 2.2 and a cupless race policy.