Trail Running Calendar United States 2025-2026

The Sandlot Marathon is a unique running event taking place at the Dave Anderson Athletic Complex in Elk River, MN. Participants can choose between a full marathon, which consists of 384 loops around the bases, or a half marathon with 192 loops. Runners will receive a Sandlot Marathon t-shirt upon r..

The Western Pacific 2025 is a running event featuring a Half Marathon, 10K, and 5K, taking place at the Quarry Lakes Regional Recreation Area in Fremont, California. This scenic course, historically used for transporting gravel in the 1800s, offers a mostly flat terrain ideal for runners of all leve..

The Chimney Rock Trail Series features a 5-ish mile trail race, organized by the Raritan Valley Road Runners, set to take place on March 29, 2025. This challenging course includes various trail running elements such as rocky paths, roots, rolling hills, and stream crossings, designed to test even ex..

The Old School @ Lincoln Parish Park is a trail running event taking place in Ruston, Louisiana, featuring three race distances: 5 miles, 10 miles, and 20 miles. This unique race emphasizes an "Old School" style, incorporating natural terrain and challenging conditions. Participants can expect aid s..

The 2025 Trail of Payne 5K, 10K, and 1 Mile Fun Run is set to take place at Paynes Prairie Preserve State Park in Gainesville, Florida. This annual event, now in its 13th year, features a unique trail race experience with a new course layout. Participants can choose between a 5K, 10K, or a non-timed..

The Terrible, Horrible, No Good, Very Bad Day 50K is a unique trail running event set for March 29, 2025, in Los Gatos, California. This non-supported, fatass run features challenging options, including a 50K with 10,900 feet of elevation gain, a 30K fun run, and a 10-mile Puppymeat run. Participant..

Cappy's Backyard Ultra is an exciting trail running event taking place at Cathedral Gorge State Park in Nevada. Scheduled for March 29-31, 2025, this unique race challenges participants to complete a 4.1667-mile loop every hour until only one runner remains. The event is affiliated with the Backyard..

The Oak Mountain 50K, taking place on March 29, 2025, is a premier trail running event held in Oak Mountain State Park, Pelham, Alabama. Celebrating its 24th year, this race features a challenging 50K course that winds through the park's scenic forested hills, including climbs to Double Oak Mountain..

The Daufuskie Island 100/50/Relay is an exciting running event taking place on Daufuskie Island, South Carolina. Participants can choose to compete in a 100-mile race, a 50-mile race, or a 50-mile relay with up to three runners. The course features a flat, 16.8-mile loop that includes roads, dirt pa..

The #RUNMARANA Tortolita Traverse Half-Marathon, 7 Miler, and MTB Races is set to take place from March 29 to March 30, 2025, in Marana, Arizona. This exciting event features a challenging half-marathon and a 7-mile trail run on the scenic trails of the Tortolita Preserve, followed by mountain bike..

The Genesee Valley Ultra is a unique endurance running event taking place at the Genesee Valley Outdoor Learning Center in Parkton, MD. Scheduled for March 29-30, 2025, participants can choose from various race formats, including 24-hour, 12-hour, and 6-hour individual or team options. Runners will..

The Clinton Lake Ultra is an exciting trail running event taking place at the Clinton Lake State Recreation Area in DeWitt, IL. Scheduled for March 29, 2025, the event features two challenging races: a 30-mile ultra and a 10-mile run, both set on scenic trails with significant elevation gain. Partic..

The Limestone Canyon Trail Run is an exciting running event taking place at Limestone Canyon Wilderness Park on March 29, 2025. Participants can choose between two distances: a 10-mile (16k) and an 18.6-mile (30k) trail run, featuring a mix of fire roads and single track with significant elevation g..

The Withlacoochee River Trail Marathon is a running event scheduled for March 30, 2025, featuring a marathon, half marathon, and 10K race. The courses are set on the scenic hiking and horse trails within the Two Mile Prairie Tract of the Withlacoochee Forest near Lecanto, Florida. Participants will..

The Morris County Empanada Trail Run is a vibrant running event taking place in Morris Plains, NJ, featuring both a 5K and a 10K run/walk. Participants can enjoy a scenic course that includes mixed terrain, such as dirt, grass, and gravel. Each registration includes a long-sleeved shirt, a unique fi..

The Urban Environmental Challenge 10k is an exciting trail race hosted by the Van Cortlandt Track Club in the Bronx, New York. Set in the scenic Van Cortlandt Park, this rugged and technical race features a 10k course that consists of two loops through the park's trails. Participants can enjoy a uni..

The B&A Trail Marathon and Half Marathon is a popular running event taking place in Severna Park, Maryland. Established by the Annapolis Striders, the marathon first occurred in 1992, with the half marathon added in 1996. The course features a mix of residential streets and the scenic B&A Trail, whi..

The Forrest Gump Hump 5K Trail Run is an exciting event taking place at Oak Ridge Prairie and Oak Savannah Trail in Griffith, Indiana. Scheduled for March 30, 2025, this trail run welcomes participants of all backgrounds and abilities, promoting an inclusive atmosphere. Runners can expect a challeng..

The Smoketown Brewery 10k is a scenic running event taking place on March 30, 2025, near Smoketown Brewery in Brunswick, MD. Participants can enjoy a flat, light gravel dirt path while competing for points in the Year-Long 5k, 10k, and Sippin Series. The event welcomes walkers and offers a virtual r..

The Montchanin Trails 5K is an exciting trail running event scheduled for March 30, 2025, in Wilmington, Delaware. This race features a scenic course that includes single track trails, gravel roads, and some hills, making it a unique challenge for participants. The event is limited to 300 runners, e..