Trail Running Calendar United States 2026-2027

Part of an eight-week trail series in Flower Mound, this chip timed event features marked singletrack 5K and 10K races with weekly podium awards, rain-date rescheduling, and no-refund registration with transfers allowed.

A low-key evening trail race series in Forest Park with three five-race Series from April to October. Races cover 4 to 7 miles, score into Series standings after four finishes, and benefit the Forest Park Conservancy.

Trail races at Brighton Resort on July 29 and August 26 offer two measured routes through alpine trails, lakes, and ridgelines. Short and long courses include single track sections and a final run to the Great Western lift.

A three day 75 mile stage race around Lake Sunapee with about 15,500 feet of gain and a separate 50K of roughly 33 miles and 6,300 feet. Overnight camping, limited aid stations, and a $35,000 prize purse.

Lean Horse Ultra is a multi-distance trail running event on the George S. Mickelson Trail in the Black Hills, held July 31 to August 1, 2026, with 100 mile, relay, 50, 30, and 20 mile options and a CrossFit edition.

A point to point relay across Colorado, the Wild West Relay covers 200 miles and 36 legs from Fort Collins to Steamboat Springs over two mountain passes. Teams of various sizes can compete and each team carries a GPS tracker with app suppor..

An evening road race at Lower Arroyo Park in Pasadena on Friday, July 31, 2026 offering 6k and 12K distances with post-run tacos and drinks for local SoCal runners and friends.

Two days of mountain trail racing at Bogus Basin with an uphill Hill Climb, 5 mile and 10 mile races, community fundraising for Ridge to Rivers, and a youth discount through the Youth Trail Initiative.

A night trail event at Land Heritage Institute on August 1, 2026 offering 5K, 17K, 35K, 50K and a 17K ruck option; headlamps and minimum water carry are required and aid stations provide food and hydration.

A trail event at Phipps Park west of Billings with 2, 4, 6, and 8 mile courses plus a virtual option, one aid station, no-paper-cup policy, awards, a $600 cash giveaway, and donations to local trail maintenance.

An inaugural 4 mile event on July 31, 2026 at Iron Horse Trail in Alliance, Ohio, with in-person and virtual 4 mile options. Registration runs March 28 to July 24 with a $35 fee and includes a bib, shirt, and medal.

Tough Mudder Indiana on August 1, 2026 at CERAland Park in Columbus offers 15K and 5K obstacle courses across woodland and farmland, spectator Mudder Village, group packages, and volunteer options.

Obstacle course weekend at Tryon International Equestrian Center on Aug 01 and 02, 2026 featuring Sprint, Super and Kids races plus workshops and spectator options on trails, clay climbs and creek beds.

A 100-kilometer loop near Oakridge, Oregon on mostly single-track trails with climbs to Fuji, The Twins, and Maiden Peak and views of Waldo Lake. The event used a lottery and offered an optional Trail to Zero carbon contribution.

Experience high elevation trail running in the mountains of Fairplay Colorado. This event offers three distances ranging from a half marathon on forest roads to technical ultramarathons through remote wilderness terrain.

Hood Hundred is a 100 mile mountain trail race on Mt Hood staged at Mt Hood Meadows. The lollipop loop course includes 17,300 feet of ascent and descent, is a Western States qualifier, and has a 34 hour cutoff.

Test your endurance at Cooper River Park on a fast and flat 3.75 mile paved loop. Choose from 12 hour, 24 hour, or 100 mile challenges with great views of Philly and full aid station support.

A trail race circling Mt St Helens with 50K and 25K options over lava, boulder and forest terrain. The 50K requires prior 50K completion and specific mandatory safety gear.

A 15 mile mountain trail run on August 1, 2026 that climbs about 3,100 feet and reaches over 12,000 feet at Kennebec Pass. The course offers alpine terrain and views of the Animas and Dolores River valleys while supporting La Plata County S..

Multi-distance trail event on Blue Hill Mountain near the coast of Maine. Courses range from 5k to 50k with aid stations and drop bags for longer races, and proceeds benefit local conservation groups.