Trail Running Calendar United States 2026-2027

Trail races at Douthat State Park featuring a roughly 13-mile loop used for a 50K, marathon, half marathon, and a six-mile race, with multiple aid stations, loop-based finisher rules, and limited field sizes.

A demanding 17.1 mile mountain trail race connecting Ouray and Telluride over the high altitude Imogene Pass. This event features steep rocky terrain and strict cutoffs for prepared athletes.

A high alpine singletrack run on the Pacific Crest Trail, the Cutthroat Classic covers 10.5 miles over Cutthroat Pass with one aid station and shuttle service between Mazama and Rainy Pass.

A point to point trail weekend on the Mogollon Rim near Pine, Arizona, offering a 100 mile ultramarathon and a 42 km race with large elevation change, technical singletrack, and designated crew and aid station support.

A family friendly beach 5k obstacle race in Stratford each September, featuring 18 plus obstacles and community fundraising for Sterling Community Center programs. Participants and teams raise funds while running, walking, or navigating obs..

A trail festival in Mendocino Woodlands Park featuring a 6-mile redwood loop with two aid stations, half-marathon and 10K options, plus 6- and 12-hour timed formats, on-site camping choices, meals, live music, and festival amenities.

A trail event at Clinton State Park offering 100 mile, 50 mile and marathon distances on a 25 mile loop. Marathoners run an extra 1.2 miles before the loop; three staffed aid stations, chip timing, and defined cutoff and deferral policies a..

Trail races at Ontario County Park in Naples NY offering a long and a short course listed as a half marathon and a 5 mile option, with camping, evening social events, post race food and vendors, and volunteer incentives.

A trail event on the Shawangunk Ridge near Rosendale offering 70 mile, 30 mile, and half marathon divisions over rugged, minimally supported terrain with shuttle logistics and enforced checkpoints.

Conquer the Gauntlet Tulsa is a four mile obstacle course on September 12, 2026 featuring more than 25 obstacles. The family owned organizer lists youth registration and group pricing options.

Pleasant Creek Trail Run in Palo, Iowa offers three loop-based distances on the park's 15K equestrian outer loop and includes timing, awards and a post race cookout. The event is organized by the Eastern Iowa Trail Alliance.

A longstanding Nederland, Colorado running event offering a 5K road run, a 10K trail, and a trail half marathon, with family-friendly features, on-leash dogs allowed in the 5K, and costume encouragement.

A timed urban ultra at Horner Park with 3, 6 and 12 hour options on a short paved loop, hourly challenges, a single aid station, and two or four person relay teams.

Three trail races in Camden Hills State Park present 10K, 20K and 50K courses around Mount Megunticook, with routes ranging from steep singletrack to wide gravel trail and an Indigenous land acknowledgement and giving option.

Tough Mudder Big Bear is an obstacle event on September 12, 2026 at Bear Mountain near Big Bear Lake, CA. It offers 5K and 10K courses with multiple obstacles, finisher items, spectator passes, volunteer roles, and group options.

A high altitude trail event in Granby, CO offering 50K, 33K, half marathon, 10K and 5K courses on dirt trails with measured elevation gain and support stations.

Point to point trail race on the Olympic Adventure Trail finishing at Lake Crescent. Offers half marathon, marathon and 50K distances with mandatory shuttles, cupless aid stations, and a lakeside finish at Log Cabin Resort.

Rebecca Mountain 50 Mile is a point to point trail event near Sylacauga Alabama on September 12 2026. It offers 50 Miler and 50K options along the Pinhoti Trail with ridge views and staffed aid stations.

Trail running at Johns Island County Park on a roughly 3.3 mile loop with 5K, 10K, half marathon, and marathon distances. On-site camping, packet pickup, an aid station at the start/finish, and volunteer discount options are available.

Experience a unique multi-terrain race through the scenic sand dunes and woodland trails of Western Michigan. Scale the iconic steps of Mt. Baldhead and celebrate your achievement at a festive post-race party in downtown Saugatuck.