Trail Running Calendar United States 2026-2027

A high altitude trail run near Los Alamos that climbs to the summit of Pajarito Mountain and tops out over 10,200 feet. The course is just under 10K with about 1,350 feet of ascent and marked singletrack and service road sections.

A chip timed 5K trail run at Salamonie Lake with wooded, gently rolling trails, a participant pancake breakfast, and fresh sweet corn for sale. Proceeds support Friends of the Upper Wabash Interpretive Services.

A trail event at Briar Patch Hunting property featuring a 20K made from repeated 5K loops, relay and individual divisions, and Beer Mile races. Beer or chocolate milk is offered before laps and beer is available to those 21 and older.

A trail event in Boise on August 22, 2026 offering 5K and 12K courses that can be run or hiked, with proceeds supporting the Bogus Basin Nordic Team and cash prizes in the 12K divisions.

Powder Keg at Carter Park in Kings Mills, Ohio on August 22, 2026 features a roughly 3.5 mile trail loop along the Little Miami River with an old road, an old dam, and a stair climb. Online registration only, fee $23.50.

Trail races at Morgan Hill State Forest use a roughly 3.3 mile loop with 607 feet of climb; choose a timed 3-hour event or the $1,000 Challenge requiring seven laps with gender equivalent targets. Aid, limited parking, and race day bib pick..

Trail races in Arrowhead, Colorado on August 22, 2026 include a 13.3 mile half marathon with 2,844 ft of climbing and a mostly downhill 5.6K. Courses run mostly on single track and finish at Arrowhead Village with awards and post race food.

A one-day community running festival in Park City, Utah organized by Dirt Circus by UltraSignup, featuring 4 and 6.5 mile group runs, an expo, raffle, local vendors, and partner booths.

Trail races at Monte Sano State Park on August 22, 2026 offering 10K and half marathon options, scenic bluff views, staffed aid stations and a 400-runner field limit.

Trail races of 10K, half marathon and 30K run through redwoods near Felton, CA, on varied single track and fire road with river crossings, marked courses, aid stations, chip timing, and a cupless hydration policy.

A day of looped trail events at Comlara near Hudson, IL, with timed options from one hour to twelve hours, a relay race, and an open course option. Runners complete roughly four mile loops and must return each hour to continue.

A looped 13 mile mountain trail near Kamas, Utah, with a Half Marathon and a Marathon+ option, high alpine terrain, multiple aid stations, and significant elevation gain.

A map navigation event in Fillmore and Japantown where solo runners or teams of up to five use a 1:7500 custom map to find checkpoints on 5K or 10K courses, then enjoy snacks and socializing at the finish.

Dog Days ULTRA in Missoula, Montana runs August 22-23, 2026 and features timed solo events plus a 24 hour relay. Registration runs March 9 to July 9, with fees listed per event.

A 4 mile open time trial on the single track trails of Schenectady Central Park with individually timed laps. All proceeds go to Hive of Hope, a community organization supporting recovery through connection and movement.

An annual 13.7 mile out and back on the Dipsea Trail from Stinson Beach to Mill Valley, run as a handicapped race with head starts for most divisions. The 2026 edition is the 56th running.

A 12 hour trail event at Saunder Springs Nature Preserve in Radcliff, Kentucky, offering solo, two person, and four person team options on a loop course that mixes technical and runnable trail with waterfalls and creekside sections.

Experience the beauty of Jenkinson Lake at Sly Park Recreation Area with trail distances ranging from a 5K to a 50K ultra marathon through scenic pine forests and rolling single track.

5 km and 10 km trail runs around Vineyard Hill in South Hamilton MA, routed through Bradley Palmer State Park and the Bay Circuit Trail. One aid station at the start area, timing by Bay State Race Services, and part of the North Shore Trail..

Trail races at Green Lakes State Park offering 100K, 50K, 25K and a 12-hour timed loop, with marked courses, aid stations, race shirts, finisher prizes, and age-group awards.