Trail Running Calendar United States 2026-2027

A community fundraiser at Westchester Lagoon on September 26, 2026, featuring 2K and 5K runs along the coastal trail to support Anchorage School District language immersion programs.

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.

Dick Collins Firetrails in Castro Valley on September 26, 2026 features a Bay Ridge 100k, a Firetrails 50 mile and the Golden Hills Marathon with UTMB Index status and organizer specified time limits.

A trail event at Clarkco State Park on September 26, 2026 offering 50K, 25K and 12.5K on a 7.78 mile loop with RFID timing, one aid station per loop, finisher medals and race shirts; overnight camping fees are separate.

A rugged trail marathon in Shandaken, NY with a point to point course through the Slide Mountain Wilderness and nearly 7,000 feet of vertical gain. Proceeds support Run Wild, Inc.

A long running cross country meet at Camp Rilea near Seaside Oregon featuring multiple flagged courses, chip timing, team lodging, live drum corps, and youth divisions.

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 takes place at Fort Carson on September 26, 2026. Runners can choose a 15K with 20+ obstacles or a 5K with 12+ obstacles, with spectator and group options available.

Trail races of 5 miles, half and full marathon wind through Deception Pass State Park with ocean views, loops and a pedestrian crossing of the Deception Pass Bridge. The event starts and finishes at Bowman Bay and is cupless.

A 100 mile open road urban ultramarathon through Miami neighborhoods on September 26, 2026, limited to 50 runners and relying on crew support, checkpoints and directional cards. A 30 mile Miami 130 Challenge is available after the 100 miles..

Run, hike, or bike up the mountain in Tamarack to support suicide awareness and mental health recovery. Face a challenging elevation gain while collecting tokens of strength and enjoying views of Valley County.

A community driven 24 hour endurance race on a *0.82 mile* loop atop the Palmer Divide in Palmer Lake, Colorado. Top distance finishers receive awards and the first ten runners to reach 100 miles receive onsite buckles.

A Last Person Standing ultra near SP Crater in Flagstaff, AZ where runners repeat 4.167 miles each hour until one runner completes the final loop. The course mixes dirt trails and road with about 150 ft of elevation gain; water is available..

Trail races on rocky single track in Cossatot River State Park offering 10K, a 12.5 mile half marathon, and a 25 mile marathon with notable elevation gain. The half uses a shuttle and the marathon requires a headlamp.

A one-way 2.5 mile ascent on Yonah Mountain near Cleveland, GA, gaining about 1,650 feet; timed from bottom to summit with an optional ruck division requiring minimum carried weight and a medal for finishers.

Timed running events at Gallatin Valley Regional Park in Bozeman offer 4 hour, 12 hour and 24 hour options on a flat 1.5 mile loop with a stocked aid station and free race photos.