Trail Running Calendar United States 2026-2027

Run through the historic site of the 1848 gold discovery in California. This event features multiple trail distances from a 5K to a Half Marathon on scenic singletrack paths along the American River.

Trail half marathon and 10K through the Alabama Hills with views of Mt. Whitney. Chip timed loops support the John Wayne Cancer Foundation and include a finisher mug and shirt.

Rootrock Trail Run at Briar Chapel features 5K, 10K and Half Marathon single track courses with varied technical terrain, on-course aid, chip timing, post-race food, and finisher medals.

A multi distance trail event on October 17 that runs inside Cave Creek Regional Park and along the Maricopa Trail, including a 50K that links Lake Pleasant to Cave Creek. Courses are rocky and exposed, cupless with staffed aid stations and..

A low cost, campground-style ultra on private trails near Crystal Springs with a one mile single track loop, an aid station at the start finish, self reporting of laps, and on-site camping and evening activities.

A 3.5 mile trail run and walk on the scenic, flat Mill Pond Trail at Woodtick Recreation in Wolcott CT on October 17, 2026. Tiered online registration is available and a post-event meal is included with registration.

A trail race in Olathe, KS organized by Team Sparkle as part of the Tour de Trail series. The course is about 10K (5.5 to 6.5 miles), uses clock timing, and includes a donation from each entry to Urban Trail Co.

Trail running event at Sam Houston Jones State Park in Lake Charles with looped, technical trails and options for 50K, 25K and 7.78 mile distances; a no medal option and yearly enamel finisher pin are offered.

The Itch is a point to point 50K on the Florida National Scenic Trail West Corridor on October 17, 2026, running from Lake Kerr Road CR-316 to the Baseline Road Trailhead in Ocala. The route uses trail blazes, has on course aid and one drop..

A four hour timed challenge of repeated one mile loops at Weymouth Woods with a separate five kilometer three loop option. Aid station support, race shirts and medals are provided and prizes go to the top male and female.

A Halloween themed 5K and 1 Mile Fun Run on October 17 2026 along the Pinellas Trail supporting Club-214 Land & Sea. Proceeds fund veteran services; participants receive finisher medals and costume prizes.

Trail races in Walnut Creek on October 17, 2026 offer 30K, Half Marathon, 10K and 5K on dirt trails through Castle Rock Park into Mount Diablo State Park. Courses are marked and GPX files plus staffed aid stations are provided.

A 5 km desert trail run at Shangrai La Ranch in New River, Arizona, where nudity is encouraged but not required. Registration includes a day visit with pools, a café, clubhouse and game room, and the race is chip timed.

The MammothMarch Minnesota will take place in Crosby Township on Saturday 17 October 2026.

Mountain trail event on October 17, 2026 offering 50K, marathon, and half marathon options that climb to Cuyamaca Peak on single track trails, with substantial elevation change and GPX course files available.

Man Against Horse Race in Prescott, Arizona pairs running and riding events over multiple distances on October 17, 2026, with mapped courses, packet pickup, a kids fun run, live tracking and charitable support for a local horse rescue ranch..

Tough Mudder Nashville on October 17, 2026 at Neal Farms features 15K and 5K obstacle courses, an Infinity multi-lap option, spectator access, and finisher rewards including medals, shirts, headbands and a finisher drink.

A multi distance trail race at Palo Duro Canyon State Park on October 17, 2026 offering 25K, 50K and 50 mile options. The looped route runs over singletrack, sand and rock, features four stocked aid stations and a cupless policy.

A 3rd annual 9.4 mile hill climb in Reno with 3,018 feet of elevation gain, starting and finishing at Melton Elementary School and reaching the summit of Peavine Peak via Chalk Canyon and Tower Ridge.

Rule the Roost on October 17, 2026 in Chillicothe, OH is a limited-entry trail event with 12 hour solo and two person relay races plus 7K and youth 7K. The all-trail course features aid stations each loop and scenic overlooks.