Trail Running Calendar United States 2026-2027

A mountain ultramarathon in Crested Butte, Colorado on September 26, 2026, offered in 35K, 55K and 50 mile distances. Courses run through Gunnison National Forest with single track trails, alpine meadows, cupless aid stations, and on course..

Experience desert style single track and forest roads with views of the Collegiate Peaks in Buena Vista. Choose between 50k or 30k distances as part of the multi sport 14er Fest.

A 24 hour trail ultramarathon at Hinson Lake in Rockingham NC on a USATF certified 1.5032 mile loop featuring electronic timing, night chem light markings, a 500 runner cap and awards for 24 hour and 100 K finishers.

Experience the rolling hills and dense forests of Pennsylvania at the Marilla Reservoir. This event features off road courses ending at a historic covered bridge with proceeds supporting local trail maintenance and development.

A 3.1 mile trail event at Ascot Hills Park in Los Angeles with chip timing and views of Dodger Stadium and the Hollywood sign. Proceeds support the Wilson High School Fire and Police Magnet Cadet Program and Ascot Hills Park.

An annual September trail running event at Lake Chabot Marina offering 100k, 50 mile and marathon races with UTMB Index status and Pacific USATF Grand Prix inclusion for the 50 mile race.

Trail race at Clarkco State Park near Quitman MS featuring a 7.78 mile loop with 50K, 25K and 12.5K options, on site camping, aid stations, RFID timing, shirts, medals and age category awards.

A 26 mile point to point trail race in the Slide Mountain Wilderness with nearly 7,000 feet of vertical gain. Multiple aid stations, post race refreshments, and proceeds support Run Wild, Inc.

The Three Course Challenge is a cross country meet at Camp Rilea north of Seaside, Oregon on September 26, 2026. It features multiple middle and high school courses, chip timing, team lodging, live drum corps performances, and awards.

A charity 5K at Coldstream Park/Legacy Trail in Lexington on September 26, 2026 benefits NICU babies, with an in-person chip timed 5K, a kids 1/4 mile dash, and a virtual 5K option with mailed shirts.

Tough Mudder Colorado on September 26, 2026 at Fort Carson offers 15K and 5K obstacle courses with named obstacles and finisher items, plus spectator passes and group or volunteer options.

Trail races at Deception Pass State Park on September 26, 2026 feature 5 mile, half marathon, and full marathon courses that loop along shorelines, cross the Deception Pass Bridge, and start and finish at Bowman Bay.

An urban ultramarathon in Miami on September 26, 2026, featuring a 100 mile race, a 30 mile add-on challenge, and a 50k. Courses use directional cards and checkpoints and rely on crew support while passing through Miami neighborhoods.

A 24 hour loop race on the Palmer Divide near Palmer Lake, Colorado. Runners repeat a 0.82 mile loop at 7,240 feet to compete for distance, awards and 100 mile buckles while supporting local parks.

A Last Person Standing backyard ultra near SP Crater in Flagstaff, AZ where runners repeat a 4.167 mile loop each hour until only one runner completes the final lap. The course mixes dirt trails and road with modest elevation gain.

Trail races along the Cossatot River in Wickes, Arkansas offering 12.5-mile and 25-mile options on rocky single-track with substantial elevation gain, aid stations, shuttle service for the half, and a no cup policy.

A one way uphill trail event of about 2.5 miles up Yonah Mountain with 1,650 feet of ascent. A ruck division requires 15 pounds for women and 20 pounds for men, and finishers receive a medal.

Timed running events on a 1.5 mile loop at Gallatin Valley Regional Park in Bozeman, Montana. Participants choose 24 hour, 12 hour, or 4 hour formats and count total distance with on course aid and crew support.

A looped trail event at Cannonsburg Ski Area featuring 100 mile and 50 mile ultra options with large elevation gain, plus 10K and 20K single track races; aid station and crew access each loop, participant fields are limited.

Trail loop races at Massey Meadow feature a half marathon and a 10K through Dry Fork Canyon with Flume Trail views, measured aid stations, elevation gain, and a cash prize for new course records.