Trail Running Calendar United States 2026-2027

Join the Mad Maple 50K weekend at Hueston Woods, offering distances from 5K up to the full 50K plus a 6 hour timed challenge. Scenic looped trails, aid stations, and custom finisher swag make for a memorable trail running weekend.

Test your grit at the 5th annual Peace Officer Memorial Endurance Ruck on May 16, 2026 at Harbour Shores Church in Cicero, Indiana. Choose a 4 hour endurance or a 5k trail ruck on a mostly unpaved loop and carry a rucksack at 10 percent bod..

Hit the trails in Casper on May 16 for Trail Mix Run Wyoming at Mike Sedar Park, with creeks, hills and muddy singletrack. Pick a 3 mile accessible route, a tougher 10 mile course, or run virtually from anywhere.

Run Hueston Woods State Park May 16 and 17, 2026 for a two day trail festival with 5K, 10K, half marathon, relay and a six hour challenge. Enjoy single track, pavement and grass routes through scenic lodge grounds and fossil rich terrain.

Run into the 1980s with The Cobra 5Kai, 10Kai & Half Miyagithon along the LA River Path in Canoga Park. Costume friendly, with throwback tunes, a finisher’s medal and plenty of crowd energy; crane kicks encouraged.

Discover the inaugural Hood Mesa Trail Run in Farmington, NM, where flowy singletrack winds through Lion's Wilderness Park. Choose 5, 9, or 15 miles of scenic desert trails and enjoy a fun, low key day on the mesa.

Run scenic Marshall Mountain in Missoula with a team relay, solo 25K, 5 mile race and kids run. Expect rugged climbs, chip timing and a festive finish with pancake brunch, vendors and fundraising for Friends of Marshall Mountain.

Join Sunderbruch Park trail races in Davenport on May 16, 2026 with 5K and 10K on mostly single track dirt trails. The 5K is rolling while the 10K adds technical climbs and sharp descents. Bring your own cup or bottle.

Ride private ranch roads at Vermejo Charcoal Burner in Raton New Mexico, from a half marathon to a 99 mile gravel challenge by historic charcoal ovens. Remote and scenic with aid stations and onsite registration.

Take on the Susquehannock Trail Ultra in Coudersport PA on May 16, 2026, an 83 mile single track challenge with over 14,000 ft of climbing. Rugged navigation and remote aid stations make this a true endurance test with a 36 hour cutoff.

Start and finish through the open doors of the Beechcraft Airport Hangar at Hatbox Sports Complex in Muskogee on May 16, 2026. Enjoy a scenic looped 5k with wooden finisher medals and special engraved cedar awards for top runners.

Choose from 2, 5, or 10 mile loops through Briar Chapel's scenic single track trails, with rocks, roots and rolling climbs to challenge your pace. Enjoy chip timing, aid stations, post race food and a kids treasure run.

Experience a scenic 14 mile loop around Vallecito Reservoir at the Vallecito Lake Heavy Half Marathon in Bayfield, Colorado on May 16, 2026. Limited to 250 runners, this fundraiser features varied terrain, pro timing, and a cupless, low imp..

Timp Trail Marathon and Half returns to Timpanogos Park in Orem on May 16, 2026, offering rugged mountain trail running with scenic views. Expect technical climbs, variable conditions and a real trail test for adventurous runners.

Tackle rugged trails at Blue Mounds State Park with Pound the Mound on May 16, 2026, offering 30, 20 and 10 mile options. Register by April 30 for a guaranteed shirt and chase the Pound the Mound Stampedeer distinction for a prize.

Join the Dandelion Dash Trail on May 16, 2026 in Petoskey for a scenic fundraiser supporting Petoskey Children’s Nature Preschool. Choose a timed 5K, family fun runs or a virtual 5K and enjoy trails, race shirts and community spirit.

Join the Bursting Bubble 5K Walk & Run on May 16 for a compassionate community run that honors varied grief journeys. Enjoy reflection at the Wall to Remember, bubbles, music and family fun while you support Chasing the Rainbows.

On May 17, 2026 tackle classic central Texas singletrack at the Armadillo Trail Run, part of Spartan Trail weekend at Reveille Peak Ranch. Expect slickrock and cactus sections on a rewarding 10K through scenic Hill Country.

Race the 10K Spartan Trail at Big Bear on May 17, 2026, across technical singletrack in high altitude pine forest with sweeping Southern Sierra views. The weekend includes Spartan obstacle races and a GOVX service member discount.

Enjoy a scenic 5 mile trail run at Muscoot Farm in Katonah/Somers on May 17, 2026. Family friendly kids races and Farm Bucks to spend at the Muscoot Farmer's Market add festival fun after the finish.