Trail Running Calendar United States 2026-2027

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Experience a high altitude 100 mile loop through the Colorado Rockies featuring 23,300 feet of gain. Run across alpine passes and historic ghost towns on the Continental Divide and Colorado Trails within a 37 hour limit.

Experience one of America's oldest 100 mile ultramarathons featuring 17,000 feet of climbing through the Green Mountains. This historic event supports Vermont Adaptive Ski and Sports and uniquely includes a concurrent horse race.

Experience an obstacle course race at Michigan's highest vertical ski resort. Choose between 5K and 10K distances featuring steep climbs and rugged trails just 20 minutes from Grand Rapids.

Experience trail running through an active working farm in Winona Minnesota. Choose from five distances ranging from 5k to 43k with no cutoffs for the longest event.

A backyard ultra in Holly, Michigan with repeated 4.167 mile loops on trail and a night road loop. Self supported runners may use crew; on-site prizes include awards for the winner and reduced entry options for assists.

Take on the McCoy Flat Death Race in Vernal, Utah on July 18, 2026, a repeated 4.1 mile lap endurance test in the high desert. Start each lap on the hour and run until one remains while enjoying shirts, swag, medals and per lap cash prizes.

A multi-distance trail endurance event on the Tahoe Rim Trail held July 18-19, 2026, offering 23K, 50K, 100K and 100 Mile options. The races are ITRA qualifiers with published time cutoffs and support local trail and community programs.

Experience an iconic Alaskan backcountry marathon from Girdwood to Eagle River. This self supported race features glacier views, technical trails, and a major river crossing through remote mountain wilderness.

A multi-distance mountain ultra in Tellico Plains with 130K, 70K and a new 24 mile Waucheesi Vert Challenge, routed on Benton MacKaye and John Muir Trail corridors and featuring on-course aid stations and live YouTube coverage.

A night trail race in the Green Swamp near Dade City offering a *30K* mixed-terrain course with aid stations every 3 to 5 miles, a Berm drop-bag zone, post-race potluck, and awards for overall top finishers.

OCR OVERLOAD features a 4.3-mile obstacle course with over 23 challenges, including a massive 140-foot rig. The event also includes a 5-mile trail run and a timed ninja sprint. Post-race food and drinks are available.

Experience a high altitude trail adventure through Colorado's San Juan Mountains. Run past historic ghost towns and reach heights of over 12,900 feet on the scenic Alpine Loop.

Trail race in Jackson, MS offering 100K, 100K relay, 50K, and 25K on shaded 7.75 mile single track loops with two aid stations and time limits for each distance.

Trail races of 50K, 30K and 15K on the Harding Truck Trail in Modjeska Canyon, CA. The event uses Tucker Wildlife Sanctuary as venue; parking is restricted so attendees must use shuttle service or runner dropoff.

A coastal mountain trail run at Point Mugu State Park with 25k and 10k options, chip timing, aid stations, locally made finisher medals, and a prize purse as part of the Bulldog Challenge Series.

A trail race near Elliston, Montana offering 15K and 30K out-and-back courses that reach Blackfoot Meadows; the 30K continues up Kading Grade to the Continental Divide.

Experience a unique night run on a flat 5k trail course in Apollo. Carry a light to guide your way on this out and back route and enjoy shuttled transport from the designated parking area.

Test your endurance at the Riverwest Nature Preserve with a looped course challenge featuring a 45 minute lap limit and distances ranging from 5 miles to a 50k ultra.

Experience an all-terrain trail event at the edge of the Bob Marshall Wilderness in Montana. Runners navigate singletrack and mountain roads across distances from 10K to 50K in a landscape home to diverse local wildlife.

Experience a night trail run through the rugged canyons and natural springs of Colorado Bend State Park. Choose from multiple distances ranging from 5K to 60K plus a special youth mile and rucking options.