Trail Running Calendar United States 2026-2027

TutHell 50K in Sioux Falls has runners complete 100 laps of a 0.31 mile loop up and down Tut Hill. Entry is by essay selection and a free will donation supports charities, with a fully stocked aid station at the hilltop.

Experience a unique 6 mile road race across the New River Gorge featuring 1,300 feet of descent and climbing. Enjoy closed roads, breathtaking park views, and a post-race brunch overlooking the river.

A loop-based elimination event in Gentry, AR where runners repeat one mile loops with a 20 minute cutoff each circuit. Eliminated entrants add $20 to a prize pot that the final finisher wins.

Three races at Lake of the Ozarks State Park include a 5.5 mile trail run, a 25K trail race, and a combined 32 mile run with 3 miles of paddling. Courses feature lake views, multiple aid stations, finisher awards, and park amenities.

Trail event at Agricultural History Farm Park in Derwood, Maryland offering marathon, 25K and timed 3 hour, 6 hour and 10 hour challenges on five mile laps with on course aid options.

Trail races at Greenland Open Space in Larkspur, Colorado offer 4 mile, 8 mile, 25K and 50K distances on dirt double-track trails with aid stations and championship designation for the 50K.

Niwot's Challenge is an invitation-only navigational ultrarunning trial near Sedalia, Colorado. Entrants must use map and compass, carry mandatory gear, and complete long off trail loops with minimal aid.

A set of road and trail races in Garden of the Gods Park on May 2, 2026, offering 5K, 5-mile road and trail options and a 9.5-mile Double Take, with closed-traffic park roads, scenic rock formations, and on-course aid stations.

Trail ultraraces of 25K, 50K and 50 miles on gravel roads through the Flint Hills near Cassoday, KS. Out and back course with manned aid stations, a 15 hour cutoff for all distances, and race day packet pickup only.

A well-marked *62 mile* trail ultramarathon in the Marin Headlands near Stinson Beach, CA, with over 11,000 feet of climb, a 15 hour 30 minute time limit and a 400 runner field limit. The race emphasizes low-waste practices and community in..

A shaded trail run and walk at Withlacoochee River Park offering 10K, 5K and 1 Mile distances; proceeds support mental health education and the PAIR Program, with limited race-day registration for the 5K and 1 Mile only.

The Prickly Pine Jackpot 24 Hour offers timed running events in the scenic Kettle Moraine State Forest. Runners choose from three different loop distances to build their mileage, with cash jackpots for top solo and relay finishers. Amenitie..

Experience the beauty of Missouri state parks with trail races ranging from 5k to a full marathon. This cupless event features scenic bluff views and single track trails for runners and hikers alike.

An ultramarathon in Van Cortlandt Park featuring an initial flat lap plus ten cross country loops, stocked aid stations, drop bag access, and finisher awards including a medal, singlet, meal and post race beer.

Run Wild Races is a biannual zoo event featuring a 1 mile, a 5K, and a Wild Ninja obstacle course. Participants get free zoo admission and net proceeds support Galapagos and Sulcata tortoise conservation.

A muddy obstacle-course festival in Deansboro, New York offering 5 mile, 5K and kids runs plus live music and local brews. Proceeds support the Barden Adventure Scholarship and other charitable efforts.

Trail event at Great Seal State Park with 100 mile, 100k, 20 mile and 5k options on a 20 mile single track loop. Aid stations, pacer rules, mandatory gear and drop bag policies are in place.

Run a 5k under the stars at Hagan-Stone Park, guided by hundreds of LED tea lights and live bluegrass music. This night trail race includes a custom shirt, a commemorative mason jar, and two post-race cocktails or mocktails. A headlamp is r..

Riverlands 100 is a 100 mile trail race at Androscoggin Riverlands State Park in Turner, Maine. Solo runners run four 25 mile laps; invited five person relay teams split the course. This edition is planned as the event's final running.

A 12 hour trail endurance event in Glorieta, New Mexico where participants complete as many 3.2 mile loops as possible. The event features running and rucking categories, on course aid, nearby lodging and family activities, and a 150 partic..