Trail Running Calendar United States 2026-2027

Take on the Arrowhead 135, organized by volunteers, a human powered winter ultra across northern Minnesota. Choose bike, ski or foot for 135 miles of extreme cold, camaraderie and fundraising for local charities.

Dark Anchor is a timed ultramarathon on Jekyll Island with a fast, flat 3 mile loop run counterclockwise over a 34 hour format. Distances from 25K to 100 miles promise a supported, community driven challenge; 2026 is sold out.

Run the stunning trails around Arches National Park in Moab with options from 9K to 50 Mile, featuring slickrock, singletrack, and La Sal Mountain views. Charity bibs support Friends of Arches and Canyonlands Parks and local causes.

RunFluent's Coo Wah Chobee returns as a single loop trail run at Carlton Preserve in Venice FL, featuring mixed single and dual track trails. Distances from 50k to Youth 5k, plus signature swag and Wicked Skin awards.

Forgotten Florida invites trail runners to explore pine flatwoods and palm groves around Christmas, Florida with 100, 50, 15 and 8 mile options Jan 31 Feb 1, 2026. Expect single track, varied terrain and wildlife sightings.

Experience a winter trail challenge on January 31, 2026 at Mendon Ponds Park, with a scenic loop around Devil's Bathtub and warm aid station comforts at Hopkins Point Lodge. Choose from 50k, 25k or 5 mile options as part of the Common Groun..

Tackle a scenic 50K trail ultramarathon at Rockburn Branch Park on six wooded loops of about 5.2 miles each. Race solo or as a team of 2 to 6 with stocked aid stations and a friendly festival atmosphere.

Tackle 15 km of single track trails at Castlewood State Park on Jan 31, 2026; expect hills, switchbacks, and scenic views. Join the 18th annual Castlewood Cup for a fun post race BBQ, beer, live music, and a sweatshirt and medal for finishe..

Enjoy a fast, scenic half marathon along the flat Dahlgren Railroad Heritage Trail in King George, VA on Jan 31, 2026. Cupless racing with SpeedCup options, aid stations, and a custom finisher medal support the local trail.

Run the scenic Sean O'Brien Trail Races in Calabasas on January 31, 2026, with distances for every trail runner. The 100K is a Western States 100 qualifier, and options from 30K to 50 Miler promise challenge and community.

Runs at Coyote Hills Regional Park in Fremont, California on January 31, 2026. Courses include a half marathon, 10K and 5K over dirt, pavement and marsh boardwalks with bay views.

Join the 10th annual Greenleaf Trail Run on January 31, 2026 at Gruber ORV Park in Braggs OK, offering 5, 10, and 20 mile trail loops over moderately technical terrain. Finishers get custom medals and top three in each race earn trophies.

Bootleg Boogie on January 31, 2026 in Boulder City, Nevada delivers rugged singletrack on a 12.5 mile loop with steep climbs and technical terrain. Choose 100 miles, 50 miles or a half marathon and enjoy night running with views of Lake Mea..

Tackle rolling singletrack near Oracle, Arizona on the AZT Oracle Rumble, a scenic trail race through Oracle State Park and the Arizona Trail. Multiple distances from 5K to 50 miles, cupless and community driven to support trail stewardship..

Take on rugged singletrack and carriage roads at the Frosty Fat Sass, a winter trail running and hiking event in West Orange's South Mountain Reservation. Choose a 5K loop or timed 3 hour and 6 hour options while supporting the South Mounta..

HAROC at Hanging Rock State Park invites trail runners to tackle scenic but challenging singletrack with 25k and 50k options. Expect big climbs, rugged terrain, and supportive aid stations for an adventure organized by Tanawha Adventures.

ReRun 5X5 Trail Run in Navasota TX on Jan 31, 2026 challenges runners to complete a 5K every hour for five consecutive hours. Run solo or join a 2 or 3 person relay for a unique endurance test on scenic trails.

Run for the Range on January 31, 2026 at Fall Creek Ranch in Granbury TX. Pick a half marathon, 10K, 5K or Couch Conservationist and enjoy prairies, creek crossings and rolling ranchland while supporting the Texas Agricultural Land Trust.

Celebrate the 10th annual Greenleaf Trail Run on Jan 31 in Braggs, Oklahoma at Gruber ORV Park. Choose 5 Mile, 10 Mile or 20 Mile looped courses on a moderately technical trail and race for custom trophies and finisher medals.

Join the Pine Island Calusa Trail 5K on January 31, 2026 in Bokeelia, Florida for a scenic yet rugged trail run with solo, family and parent child entry options. Medals, post race refreshments and proceeds support Kiwanis youth programs.