Trail Running Calendar United States 2024-2025

The Run With The Deer Flies event features 25K, 15K, and a newly added 8K trail run, taking place on July 27, 2025. This event is designed for both seasoned and novice runners, making it an excellent opportunity for first-time trail participants. Finishers will receive unique medals and traditional ..

The Summit 200 is an extraordinary 200-mile mountain race set in Summit County, Colorado, featuring a challenging loop that showcases stunning hiking trails, forest roads, and scenic views. Participants will experience significant elevation changes, with the lowest point over 9,000 feet and sections..

The Ragged 75 Stage Race and 50K, held at Ragged Mountain Resort in Danbury, NH, is a challenging multi-day running event scheduled for August 1-3, 2025. The stage race covers 75 miles with approximately 15,500 feet of elevation gain, featuring technical trails, steep climbs, and diverse terrain. Pa..

The Folsom 100 is an exhilarating 100-mile ultramarathon that takes place around Folsom Lake, California. Scheduled for August 1, 2025, this challenging race features a point-to-point course with a single out-and-back section. Participants have 34 hours to complete the loop, which includes stunning ..

The Boise Front Trail Run is an exciting running event taking place at Bogus Basin Ski Resort in Boise, Idaho. Scheduled for August 2, 2025, the event features two courses: a 5-mile and a 10-mile run, catering to various skill levels. Participants can enjoy the scenic trails while contributing to a ..

The Sheep Mountain Ultras, part of the Human Potential Running Series, is an annual trail running event held in Fairplay, Colorado. Scheduled for August 2, 2025, it features three race distances: a challenging 50-mile, a 50k, and a half marathon, all set against the stunning backdrop of the South Pa..

HURL Elkhorn is a challenging running event set in the stunning Elkhorn Mountains of Helena, MT, featuring three race distances: 50 miles, 50K, and a half marathon (13.1 miles). Participants navigate technical single track trails, primitive jeep roads, and experience significant elevation gains, wit..

The Blue Hill Mountain Trail Fest is a vibrant multi-distance running event held in Blue Hill, Maine, featuring 5k, 10k, 25k, and 50k races. Participants of all skill levels can enjoy the scenic trails that showcase stunning coastal vistas and lush landscapes. The event emphasizes community and cele..

The Oakadoke Trail Runs is a summer trail running event held in Valparaiso, IN, featuring scenic courses of 18 miles, 9 miles, and 4 miles through the picturesque Creekside Trails. Participants can enjoy a challenging yet enjoyable experience with tree-covered single-track paths, winding switchbacks..

The Philmont Trail Race is a running event scheduled for August 2, 2025, in Cimarron, New Mexico. It features multiple race options, including a 50-mile race, a marathon, an 18-mile Heavy Half, and an 8-mile Tooth Ridge Sprint, catering to various skill levels. The event supports Philmont Scout Ranc..

The Waldo 100K Ultramarathon is a challenging race set in the scenic Willamette Pass, Oakridge, Oregon. This 100K loop course features a mix of single-track trails and remote sections, offering stunning views of Waldo Lake and the surrounding mountains, including Fuji and Maiden Peak. Designed for e..

The Indian Trails 5K is a running and walking event scheduled for August 2, 2025, in Milan, Indiana. This event features multiple categories, including a 5K run and walk, with options for participants to receive a t-shirt or not. It serves as a fundraiser for the Milan cross country team and is part..

The 3H Trail Half Marathon, scheduled for August 2, 2025, takes place in King George, Virginia, along the scenic Dahlgren Railroad Heritage Trail. This flat and smooth course, ideal for runners, features a variety of surfaces and is predominantly shaded by trees. Participants can expect a well-organ..

The Blazin' Summer Sufferfest is a night trail running event held at Cedar Hill State Park, Texas, featuring various distances including approximately 5K, 10K, 18K, 36K, and 54K. Participants navigate a challenging 12-mile trail system through scenic forest and grasslands. Due to the Texas summer he..

The Boulder Rez Marathon is a scenic running event held at the Boulder Reservoir in Boulder, Colorado. Participants can choose from various distances, including a marathon, half marathon, 3/4 marathon, and 10K, all set along dirt roads and trails with stunning views of the reservoir and Rocky Mounta..

The Riley Park Trail Races, held in Thomas F. Riley Wilderness Park, Coto de Caza, CA, offers a variety of race distances including a 30k, half marathon, 10 miler, 10k, and 5k, making it a family-friendly event suitable for all skill levels. Participants can enjoy beautiful trails and the morning su..

The Hamster Endurance Runs is a unique running event taking place in Bellingham, featuring 6, 12, 24, and 32-hour races. Established in 2013, the event promotes a fun and challenging atmosphere while raising funds for local organizations, specifically benefiting the Whatcom Family YMCA's Girls on Th..

Three Degrees of Hell is an exciting running event held in Henderson, NV, featuring various distance options including a 10K, 5K, and 1-mile races for both adults and kids. Participants can enjoy the scenic Pittman Wash and Harry Reid Trail, showcasing beautiful views of Las Vegas and diverse plant ..

The Angeles Crest 100 Mile Endurance Run, established in 1986, is a prestigious ultramarathon held in the San Gabriel Mountains of California. This challenging point-to-point race spans 100 miles from Wrightwood to Altadena, featuring significant elevation changes and rugged terrain. Participants ex..

The Kinni Adventure Race, hosted at Kinnickinnic State Park in River Falls, WI, is an exciting endurance event that challenges participants to navigate through diverse terrains while seeking hidden books using a provided map. Covering approximately 10-13 miles, the race emphasizes strategy and resil..