Trail Running Calendar United States 2026-2027

An evening running event at Chambers Bay in University Place, Washington offering 5k, 10k and half marathon distances on a paved loop with varied terrain, aid stations, race-day packet pick-up, and event swag.

Trail running at Southwestway Park on August 15, 2026 with 5K and 15K mapped courses, river views, official awards, and a free kids run.

A multi-distance race at Boulder Reservoir, Colorado, featuring a mostly dirt and trail course with about 200 feet of elevation gain and views of the reservoir and the Rocky Mountains.

The Muddy Dash - Philadelphia, PA will take place in Logan Township on Saturday 15 August 2026.

Trail ultras from Roxborough State Park to Sharptail Trailhead featuring sustained climbs, technical singletrack, and a long runnable finish, with full aid support and an emphasis on land stewardship.

A summer ultra in Lockport, NY with 25, 50 and 100 mile options along the Erie Canal towpath. Crewed aid stations provide food and fluids on the out and back course, and a Double Beast Buckle is available for dual 100 mile finishers.

Trail races in Fahnestock State Park near Cold Spring, NY on August 15, 2026, offering 50K, 25K and a 5.5-mile option across mixed dirt roads and single track. On-course aid and post-race meal included; proceeds support park conservation.

An endurance festival on a 3.65 mile loop around Tellico Lake offering 24, 12, 6, 3 hour races and a 6 hour ruck division. Finisher awards are given and a $500 prize is offered for breaking the 24 hour course record.

Two day trail weekend at Angel Fire Resort featuring a 5.2 mile ascent with lift return and a 10.4 mile up and down race. Singletrack climbs about 2,000 feet to the summit with marked course and resort lodging options.

Experience a technical mountain race in Palmer featuring a 5000 foot vertical gain over 8 miles. Navigate steep ridges and alpine tundra from Government Peak to the historic Independence Mine in this point to point Alaskan challenge.

A 10 km trail race at Battelle Darby Creek Metro Park through prairies, fields and riparian forest. ORRRC members run free while non-members pay a modest fee; check-in with a timing chip is required and service dogs only are permitted.

Night Claw is a night trail event in Glen Rose offering 4M, 10K, 10K ruck and timed 4/6/8 hour races on dirt and rocky single-track. An optional Claw Challenge adds a tear-tag chase where finish tags determine beat or clawed status.

A community running event in Vian, Oklahoma on August 15, 2026 offering a 5K trail run, a 1K paved fun run/walk, and a virtual 5K available through August 22.

Hill of a Race 2026 in Bloomington, IL combines a lap based Endurance Challenge with multiple 3 mile obstacle course waves, including competitive men, women, masters and several recreational waves.

A 50K ultramarathon in Marin County on August 15, 2026, running iconic Coastal, Miwok, Matt Davis and Dipsea trails with about 6,600 feet of elevation gain. Part of the USATF PA Grand Prix and offering a $10,000 podium purse.

Test your endurance at Ferncliff Camp with a multi loop trail race near Little Rock. Enjoy a post race cookout and pool access after navigating inclines and water crossings across various distances.

A 5K and a 1 mile run and walk on the Pennsy Trail in Greenfield, IN, held at Sister Cities Park next to the police department. The course is an out and back along the trail and race and volunteer registrations have set dates and fees.

A three-leg relay on the Ozark Trail for two-person teams, combining trail running, mountain biking and paddling through the Huzzah area and Meramec waterways. Proceeds benefit the Ozark Trail Association.

Test your endurance at Prairie du Chien's first backyard ultra featuring a 4.167 mile trail loop through La Riviere Park. Run one lap every hour until only one participant remains or enjoy a relaxed one lap fun run.

A 25K trail race on August 15, 2026 in Cook Forest State Park featuring a 17 plus mile loop across 13 trails, a climb to the Cook Forest Fire Tower, riverside sections, and three aid stations staffed by local high school teams.