Trail Running Calendar United States 2025-2026

Oli Via is a challenging running event taking place in Chattanooga, TN, featuring a half marathon and a 4.5-mile race, both conducted on dirt trails. The courses include significant elevation gains, with the half marathon featuring 2,444 feet of climbing and the 4.5-mile race having 731 feet. Partic..

The Mt. Spokane Trail Run is a scenic trail running event held at Mt. Spokane State Park, featuring courses of 5K, 10K, and 25K distances.Participants enjoy a course along Spokane's historic mountain, starting and finishing at Selkirk Lodge. Runners receive a finisher shirt, medal, and food, with op..

The Macedonia Trail Race, held in Macedonia Brook State Park in Kent, Connecticut, offers a unique trail running experience with lush forest trails, challenging climbs and descents, and stunning viewpoints including Cobble Mountain, where runners can see the Catskill Mountains on clear days. Now in..

The Wicked Mudder will take place in Southwick on Sunday 7 September 2025. You can run between 5 and 5 kilometers.

The Mammoth Bar Trail Runs, held in Auburn, California's Auburn State Recreation Area, offer challenging trail races on September 7, 2025. Participants can choose from a Half Marathon, 10K, or 5K, all set on the single-track and double-track trails of the Mammoth Bar OHV Area. Known for its steep cl..

The Glen Iris 5K & 10K Trail Run/Walk is a scenic event held within Letchworth State Park, known as the "Grand Canyon of the East," in Castile, NY. Participants will enjoy challenging woodland trails with breathtaking views of the Genesee River Gorge, wildlife, streams, and bridges. The race feature..

If You're Not First You're Last is a unique endurance running event held in Eagle, Idaho, featuring a challenging 4.167-mile loop course. The race tests participants' stamina and grit rather than speed, as runners must complete each loop within an hour and be back at the starting corral on the hour..

Run Rabbit Run is an annual ultramarathon held in Steamboat Springs, Colorado, featuring 50 and 100-mile races through scenic mountain terrain. The event showcases challenging courses with significant elevation gains, including climbs over Mount Werner and Emerald Mountain. The 100-mile race offers..

The Goat Rattler 100 is a challenging ultramarathon held in North Ogden, Utah, featuring a 101-mile course with 22,500 feet of vertical gain, primarily on single-track trails. Participants must have prior ultrarunning experience, completing a 100-mile or equivalent race within the last two years. Th..

The Rut Mountain Runs is a three-day mountain running event taking place in Big Sky, Montana, from September 12 to 14, 2025. The event features a variety of races, including the Lone Peak Vertical Kilometer, a Trifecta (50K, 28K, VK), and distances ranging from 50K to a Kids 1K Runt Run. This celebr..

The Breckenridge Oktoberfest 5K is an exciting running event that kicks off the annual Oktoberfest celebration in Breckenridge, Colorado. Set against the stunning backdrop of the changing aspens and beautiful mountain scenery, this 5K trail run takes participants through the picturesque Town of Brec..

The Dirty Spokes Road Atlanta event features a thrilling trail running experience at the Road Atlanta Trail System in Braselton, Georgia. Participants can choose between two distances: 9.10 miles and 4.55 miles, both set in a scenic, well-groomed trail environment. The race is exclusive to race day,..

The Plain Endurance Runs are challenging ultramarathon events held in the Cascade Mountains near Leavenworth, Washington. The races include a 100-mile and a 100K course, featuring approximately 85 miles of trail and 20 miles of forest service roads with around 21,000 feet of elevation change. Partic..

The Mill to Mill 5K/10K event, organized by Willow Running USA and the Friends of the Keuka Outlet Trail, will take place on September 13, 2025, in Penn Yan, NY. This annual race features both a 5K and a 10K course along the scenic Keuka Outlet Trail, starting and finishing at Cascade Falls. Partici..

Wilcox Wild is a challenging 50K trail ultra run held in the Adirondack Park Wilderness, New York, starting and finishing at Harrisburg Lake. The course features rugged terrain with an elevation gain and loss of 3,028 feet, following a lollipop route through scenic areas including East Stony Creek T..

The Virgil Crest Ultras is an exciting running event taking place in Cortland, NY, featuring challenging courses of 100 miles, 50 miles, and 50K. Known for its steep ascents and descents, the event promises a beautiful experience through singletrack forests and stunning views. Participants can expec..

The Mountain Lakes Trail Run & Walk in Princeton, NJ, is a scenic event held at the Billy Johnson Mountain Lakes Nature Preserve, benefiting the Friends of Princeton Open Space. It features a 5K+ trail run and a 3K walk, both traversing a mix of paved park trails, unimproved service paths, and singl..

The Storybook Half Marathon is a friendly trail running event held in Roosevelt Forest, Stratford, Connecticut. The course consists of 1.64-mile loops repeated eight times, totaling the half marathon distance of 13.1 miles. Runners, joggers, hikers, and walkers are all welcome, with a four-hour time..

The Oak Flats Picnic Trails Fatass is a free trail running event held in Tijeras, New Mexico, within the scenic Cibola National Forest. Open to all abilities and even dogs, participants can choose distances from 5k up to 30k by completing laps on looped courses of approximately 3.2 miles (short) or..

The Jones Gap Trail Half Marathon, part of the Upstate Race Series, takes place at Jones Gap State Park in Marietta, SC. This scenic 13.1-mile race features breathtaking views of Rainbow Falls and the Mountain Bridge Wilderness Area. Participants can enjoy a well-organized event with amenities inclu..