Trail Running Calendar United States 2026-2027

A two-day Spartan Trifecta at Badlands Off Road in Attica, IN on Sep 26-27, 2026 featuring Sprint, Super, Beast and kids races across dunes, rocky trails, forests and creek beds with multiple obstacles.

A Spartan obstacle weekend at Lake Elsinore Raceway featuring Sprint 5K, Super 10K, kids races and Hurricane Heat formats. Expect rugged trails, mud, varied terrain and onsite spectator options.

A one day mountain trail challenge visiting five peaks around Westmore, Vermont, covering roughly 26 miles and about 6,142 feet of ascent. Staffed water and aid stations appear along the route and morning shuttles run from NorthWoods campus..

A multi distance trail and ultramarathon festival on the Rainbow Trail near Westcliffe, Colorado on September 26 and 27, 2026, featuring races from 8 miles to 100 miles, aid stations, drop bags, camping, and defined crew and volunteer rules..

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.

A set of trail races at Lake Chabot in Castro Valley offering a Bay Ridge 100k, Firetrails 50 and Golden Hills Marathon with published course and aid station plans, set time limits, UTMB indexing, and finisher awards.

A trail event at Clarkco State Park in Quitman, MS on September 26, 2026 offering 50K, 25K and 12.5K on a 7.78 mile loop with RFID chip timing, aid stations, on-site camping options, medals, shirts, and age group awards.

The Cat's Tail Trail Marathon in Shandaken, NY is a 26 mile point to point trail race through the Slide Mountain Wilderness with about 7,000 feet of vertical gain. The race offers aid stations, post race refreshments, and a 25 percent veter..

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 100 mile ultramarathon through Miami neighborhoods that relies on crew support and step by step checkpoint navigation. A 130 mile add on and a 50k are also offered, with maps released in segments during the race.

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 24-hour endurance race on a 0.82 mile loop atop the Palmer Divide in Palmer Lake, CO. Top three awards and onsite buckles for the first 100-mile finishers; $5 from each registration supports local parks.