Trail Running Calendar United States 2026-2027

Trail races at Scott County Park in Long Grove, IA featuring 50K, 10 mile and 5 mile options on a roughly 10 mile loop with on-course aid stations and drop-bag and pacer policies for the 50K.

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.

Dirt Circus Los Angeles is a free one-day community run and expo on August 29, 2026 at A Snail's Pace Running Shop in Chino Hills. It features group runs of 5K and 10K, local vendors, product demos, and a raffle.

A backyard ultra at 2308 Victory Lane in Bussey, IA where runners complete a 4.167 mile loop each hour up to a 12 hour cap. Crews attend from a designated area and the last runner to complete one more lap than others is the winner.

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.

A multi event ultramarathon in West Greenwich, Rhode Island featuring a repeated 10 mile loop with desert, pavement and trail sections. Chip timed events include aid stations, a finisher sweatshirt and a buckle for 100 mile finishers.

A hilly loop race around Angel Island on August 29, 2026 offering a Half Marathon and a 10K, with ferry access included in entry prices. The field is limited to 400 participants and headphones are prohibited for safety.

Experience the Oregon Coast with hilly trail runs at Sunset Bay State Park. Choose from four distances featuring cliffside ocean views, wooded paths, and beach sections in this RRCA sanctioned event.

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.

Spartan Stadion Philadelphia on August 29, 2026 uses an urban stadium course in South Philly with steep stairs, narrow concourses and 20 obstacles over 5 km. Kids races and spectator tickets are available.

A night trail run at Estero Llano Grande State Park with 5k, 10k and 10 mile looped courses, youth options, two aid stations, medals for all finishers and overall awards for top three male and female.

Run Like the Wind in Allenspark on August 29, 2026 features a 5K race, a 2K run/walk and a dog jog option. Proceeds benefit The Old Gallery and participating dogs are entered in an amateur dog show.

A 50 mile mountain ultramarathon in Ouray, Colorado with 23,582 feet of climbing across technical, high elevation trails. Entrants must meet a volunteer service requirement, carry a provided SPOT tracker, and winners face drug testing.

Endurance race on one of Cleveland's steepest hills where runners complete as many laps as possible within 1, 3, 6, or 12 hour limits. All registrations and donations go directly to cancer patients through the Nelson Family Foundation.

A backyard ultra at Oak Mountain State Park where runners complete repeated 4 miles 880 feet loops, one hour each, until only one runner completes an extra loop. The field is limited to 100 and limited aid is provided at start and finish.