Trail Running Calendar United States 2025-2026

The Lazy A Backyard Ultra is an endurance running event held in Udall, Kansas, where participants aim to complete as many laps as possible until only one runner remains. Each lap measures 4.167 miles, and runners must finish within one hour to continue. The race format emphasizes self-sufficiency, w..

The John Wayne Grit Series - Newport Coast is a running event that features 50K, 25K, and 5K races set against the stunning backdrop of Crystal Cove State Park in Laguna Beach, California. Participants will navigate hill climbs and enjoy ocean views along dirt roads and single-track trails. The even..

Go Spring! is an exciting trail running event taking place in Battle Creek Regional Park, St. Paul, MN. Scheduled for May 10, 2025, it features a variety of races including a 10K, 5K, and a 2.5K Trail Kids run, catering to participants of all ages and experience levels. The event is designed to intr..

The Grizzly Peak Trail Run is an exciting running event taking place at Lake Anza in Tilden Regional Park, Berkeley, CA. Scheduled for May 10, 2025, it features multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under...

Niwot's Challenge is a demanding ultramarathon held in Colorado's Front Range, inspired by the Barkley Marathons. This grassroots event, limited to 40 participants, emphasizes navigation skills as runners traverse mostly off-trail terrain using only a map and compass. The challenge includes various..

The Thunderbunny Trail Races, taking place at Strouds Run State Park in Athens, OH, is a premier ultramarathon event celebrating its 8th year. Participants can choose from three race distances: 50K, 25K, and 11K, all featuring scenic trails that highlight the beauty of the Appalachian Foothills. The..

The Scenic City Trail Race, taking place in Chattanooga, TN, features both a marathon and a half marathon, set against the beautiful backdrop of Stringers Ridge. The course consists of a 6.65-mile loop, providing participants with a scenic running experience. Proceeds from the event benefit Wild Tra..

The Trail Run at Sly Park - Spring is an exciting running event taking place at the Sly Park Recreation Area in Pollock Pines, California. Participants can choose from various distances, including a 50K, Trail Marathon, 17 Miler, Half Marathon, 8 Miler, 10K, and 5K, all set against the stunning back..

The Over the Top Trail Race, organized by the Pocatello Running Club, will take place on May 10, 2025, in Pocatello, Idaho. This popular event features a stunning course through the City Creek Trail System, showcasing beautiful singletrack trails with scenic overlooks and diverse terrain. Participan..

The Skyline Trail Run is a 5k event set in the scenic trails surrounding Dinosaur Park in the Skyline Wilderness Area of Rapid City, South Dakota. Participants can enjoy a vibrant running experience amidst beautiful landscapes. After the race, food and drinks will be provided, along with raffle priz..

The Dahlgren Trailblazer is an annual community bike event held in King George, Virginia. Participants embark on a friendly 8-mile ride starting from the trailhead at 10431 Bloomsbury Road, turning around at 9274 Comorn Road. The event is organized by the Friends of the Dahlgren Railroad Heritage Tr..

Dirt Circus - San Luis Obispo is a vibrant community running event set to take place in San Luis Obispo, California. Organized by UltraSignup, this festival celebrates local races and the running community, featuring a social run, food, and a raffle with exciting prizes. Participants can enjoy a cas..

The Mountain Ridge Trail Race, taking place on May 10, 2025, in Highlands Ranch, Colorado, offers a variety of distances for trail running enthusiasts, including a 21-mile, half marathon, 10K, and 5K. Celebrating its 11th year, the race features scenic dirt and single-track trails with manageable el..

The Bone Yard Trail Race, taking place on May 10, 2025, at Mt. Zion Bike Trail in Brookhaven, MS, offers a variety of running options including a 50K, a 50K relay, a 20-mile, and a 10-mile race. This annual event, previously known as Dust N Bones, promotes health and fitness in a scenic outdoor sett..

The Germantown Trail Race, scheduled for May 10-11, 2025, offers a variety of running events at Germantown MetroPark, including a half marathon, 10K, 5K, and a 20K relay. Participants can also join the "6 Hours of Power" event. The race showcases the park's stunning landscapes, featuring old-growth..

The Boney Mountain Trail Run is an exciting running event set in the stunning Santa Monica Mountains, starting at Rancho Sierra Vista | Satwiwa National Park. Participants can choose between a challenging half-marathon course featuring creek crossings, single-track climbs, and breathtaking ocean vie..

The Baker Band Bustle will take place in Baker City on Saturday 10 May 2025. You can run between 5 and 13 miles.

Hann Jivin' in the Dark is an exciting night running event taking place in Knoxville, TN, featuring a 6-mile race and a Kids Trail Mile. The event is designed to provide a unique experience as participants navigate through the wooded trails of Knoxville's Urban Wilderness, with the course being most..

The Cpl. Fulks Memorial Trail Race is an annual event held at Meeks Mountain Trails in Hurricane, West Virginia, honoring Cpl. William B.Fulks, a local hero who served in the Marine Corps. The race features multiple events, including a 5K run, 10K run, 5K walk, and 5K ruck, with proceeds supporting..

Trail Prom is an exciting running event organized by Salt City Trail Racing, taking place in Fabius, NY. This unique race features an elimination-style tournament format where participants compete in two-person teams, with options for the "Senior Prom" (8 to 20 miles) and the new "Junior Prom" (4 to..