Trail Running Calendar United States 2026-2027

A trail race weekend in Waterville Valley, New Hampshire, offering *50K*, *23K*, a 4 mile trail, and a 1 mile Bear Cub Fun Run; the 50K includes 7,700 feet of climbing and requires specific mandatory gear.

A trail event at Kansas Maze in Buhler, Kansas that sends runners through over 20 acres of sunflowers. Offers 5K and 1 mile options on August 29, 2026 with finisher shirts, medals, and on site festival perks.

Muddy Dash Mechanicsville is a 5K mud run at Budds Creek Motocross Park with obstacles, mud pits and slides plus a festival style after party with music, food and beer. Registration options include standard and VIP packages.

Trail races at Huddart Park, King's Mountain and Bear Gulch offer measured distances from a 50 yard kids dash to a 50K, with fees listed per distance and registration opening November 11, 2025.

A mountain trail event in Steamboat Springs offering 50k, 16 mile and 5 mile courses with high-elevation climbs, cupless aid stations, and limited crewing at Rainbow Saddle. Proceeds support trail maintenance.

TANRI Lake Race at YMCA Sequoia Lake in 2026 features relay teams, a single-loop 10K and a 10-hour individual lap event. Courses use 5-mile loops, offer prize payouts, and include a Tanri hat plus Saturday dinner with registration.

Trail races of 50K, 10 miles and 5 miles at Scott County Park near Long Grove, IA. The event uses a roughly 10 mile loop, has stocked aid stations, and allows pacers for the 50K with online registration only.

A community run on Table Rock Trail near Boise that follows an approximately 3.8 mile round trip course with 900 feet of climb. Proceeds support scholarships for Idaho students and the LESS Society mission.

Trail runs and walks on August 29 2026 at Phillips Creek State Forest offering 5K, 10K, and a newly added 25K over varied forest trails with creek crossings, mud, and rolling terrain.

Trail races at the Lewis and Clark Trailhead near St Charles include a 13.1 miles half plus separate 8 miles and 5 miles loops. Aid stations offer water and Tailwind and each runner receives a reusable cup at packet pickup.

A free, one-day community trail running festival in Los Angeles on August 29, 2026 with a group run in 5K and 10K options, an expo with vendors and race directors, food, and a raffle showcasing local running resources.

A backyard ultra in Bussey, IA where runners complete repeated **4.167 mile** laps each hour up to a 12 hour cap; the last runner to complete an extra lap wins, and all others receive results by distance or laps.

Trail races at Mt. Airy Forest in Cincinnati include 5K, 10K, a 13.1 Miles half marathon and 30K. Finishers get medals, half marathon and 30K include shirts, and the event awards series points across the ATR season.

A community trail event at the Arapahoe County Fairgrounds on 08/29/2026 with a 5K run, a family 5K walk that allows leashed dogs, and a kids 1 mile plus demonstrations, vendors, and a pancake breakfast.

A muddy mix of cross country running and obstacles in Lewiston on August 29, 2026. The event can be run competitively or enjoyed as a casual mud run and includes a Mini-Mudder for children 10 and under.

Experience the Midland City Forest trails by day or night at the 10th annual Red Moon Trail Run. Choose from various distances marked by LED guides on a flat loop course with professional timing and finisher medals.

Ocean State Ultra in West Greenwich, Rhode Island (August 29–30, 2026) offers a 100 mile race with a 34 hour limit plus 12 and 6 hour loop events; registration runs March 30 to August 17, 2026.

Island loop races at Angel Island State Park with sweeping bay views; a 10K single loop and a Half Marathon that does two loops, limited to 400 participants and requiring ferry transport.

Trail races at Sunset Bay State Park near Coos Bay on August 29, 2026 include a half marathon, 15K, 4 mile trail and 1 mile beach fun run on a hilly coastal course with aid stations and awards.

Multiple distances are held in Katy Texas on August 29 2026, including 5K, 10K and a half marathon. Courses use short out and back loops, there is a 3 hour 30 minute time limit, and registration is online only.