Trail Running Calendar United States 2025-2026

The Jim Mayer Trail Family Fun Run is part of the Cambria County Trails Series, featuring both 5K and 10K distances along the scenic Jim Mayer Riverswalk Trail in Johnstown, PA. Participants will enjoy a picturesque route alongside the Stonycreek River, passing notable landmarks such as the Trail Ar..

The Hurricane 100k is a challenging trail running event held in Hurricane, West Virginia, featuring a 62-mile course on the scenic Meeks Mountain Trails. Participants can compete solo or as part of a three-person relay team, with each lap covering 10.3 miles of single-track mountain terrain. The rac..

The Naperville Trails Half Marathon & 10K is a scenic running event taking place in Wheaton, Illinois, on September 6, 2025. Participants can choose between a half marathon and a newly introduced 10K distance, both of which traverse the beautiful crushed limestone trails of the Danada Forest Preserv..

The Panther Creek Challenge is a running event taking place in Morristown, Tennessee, featuring a variety of race options including a 10-mile, 5-mile, and a Kids Trail Mile. This event is designed to cater to runners of all ages and skill levels, with specific categories for students aged 14 and und..

Chasing Trails Ultras is a trail running event scheduled for September 6, 2025, in Old Fort, North Carolina. The race offers timed options of 3, 6, and 12 hours, along with a 5k race, all on a scenic, beginner-friendly ~3.2-mile loop trail with about 380 feet of elevation gain. Participants can comp..

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 Twisted Pine Trail Runs is an exciting running event set in the picturesque South Beach State Park along the Oregon coast. Participants can choose from three race distances: a half marathon, 10k, and 5k, each offering a unique adventure through lush forests and sandy beaches. Runners will naviga..

The Diablo Trail Run, held at Diablo State Park in Clayton, California, offers a variety of scenic trail running events on September 7, 2025. Participants can choose from distances including 4 miles, 10 miles, half marathon, marathon, and 50K, with a free Kid's Run also available. The course feature..

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 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..

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

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 Country Roads Trail Run, held at the Summit Bechtel Reserve in West Virginia, offers a scenic and challenging experience for trail runners. Participants can choose between a 10K and a half marathon, navigating varied terrain that includes both smooth singletrack and steep, technical sections. 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 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..

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..

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..

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 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..