Trail Running Calendar United States 2026-2027

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.

An ultrarunning event in Kettle Moraine State Forest on May 2–3, 2026 offering 6 hour, 12 hour and 24 hour solo and relay formats across three loop lengths. Jackpot cash prizes are funded from registration fees and distributed to top finish..

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.

A 50K ultramarathon at Van Cortlandt Park on 05/02/2026 composed of an opening flats lap and ten cross country loops, with stocked aid station access and drop bags. Finishers receive a medal, singlet, hot meal and cold 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 memorial mud run near Deansboro NY honoring Daniel Barden, with timed and untimed obstacle-course runs and a kids fun run. Courses feature hills, obstacles and mud when wet, and parking donations benefit local fire and EMS.

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..

On May 2-3, 2026 White Lake Ultras run at White Lake State Park in Tamworth NH. Runners complete a slightly technical 2 mile single track loop with a short beach section and choose from 24 hour, 12 hour, or 6 hour formats.

A time trial up and down Firelane 1 in Forest Park covering about 4.45 miles and 1,266 feet of elevation change. Waves of runners start every ten minutes and a post-race viewing party with livestream and refreshments is held at Great Notion..

Mud Factor MCKINNEY is a 5K mud and obstacle run at Myers Park in McKinney, Texas on May 2, 2026. The event has Adult and KIDZ Family waves, requires a signed waiver and photo ID for adults, and charges a spectator fee.

Experience rolling hills and scenic wetlands at the Trail Mix Race in Rockford. With distances ranging from 6K to 50K, runners explore prairies and big woods landscapes in this premier western metro park.