Trail Running Calendar United States 2026-2027

Obstacle and mud focused 5K at Lost Lake Entertainment Complex in Oklahoma City on August 8, 2026 with pre race and finish line festivals and multiple registration packages.

Trail Animals Running Club holds 10M, 50K and 40M trail races on a mostly forested 10-mile loop at Noon Hill Reservation in Medfield MA.

Run The Skyline is a trail running event on August 8, 2026 offering multiple race distances from a half marathon up to 55K. It features separate race pages, a registration option, and an entrants list.

Time based trail running at Skyline Wilderness Park in Napa where participants run as far as they can in 3 hour, 6 hour, or 12 hour formats on a 4.16 mile loop.

High Sierra trail event near Kit Carson, CA offering a 50K plus shorter looped races, 7,700 ft of climbing, marked courses and aid stations.

A trail race weekend in Cooke City, Montana with 50k, 30k and an 80K option set among mountain scenery and historic mining sites on 8/8 to 8/9/2026.

Follow the path of a historic outlaw on this mostly downhill point to point race. Run through the Sawtooth National Forest on a mix of rugged jeep trails and ten miles of single track forest paths.

A trail run fundraiser in Poultney, VT featuring a half marathon, an 8K, and a kid's fun run on wooded single-track trails, with proceeds supporting Slate Valley Trails.

A loop ultrarunning event at Kennekuk Cove County Park with 3.25 mile laps, aid stations, camping, shirts and swag bags, and four hour and eight hour runner and walker options. Field limited to 250 participants.

Multiple loop trail races in Lewis Center OH on August 8 2026, with 7K to 26K options, marked loops along Alum Creek Reservoir, finisher amenity and awards.

A pasture-based fundraiser at Musk Ox Farm in Palmer offering 1K kids, 5K and 10K courses plus a virtual option with views of musk oxen and nearby mountains.

A trail running event on Aug. 8, 2026 in Gilroy, California through redwood groves and peak viewpoints. Distances include a 5K, 10K and half marathon with significant elevation gain, and proceeds support youth scholarships.

A community ultramarathon format that invites running a 5K each hour up to 50K while raising funds for the Children’s Minnesota Kids Cancer Fund; virtual participation and family-friendly options are available.

A historic Flagstaff race on August 8 with half marathon, 5K and Kid's Dash options on Observatory Mesa. Proceeds support Big Brothers Big Sisters of Flagstaff and participants receive shirts, photos and medals.

A cross country 5K and a 0.5 mile kids fun run at South Range High School in Canfield Ohio with finisher medals, event shirts, and awards for top overall and age group finishers.

Timed 6 hour and 12 hour loop races in Chester, Vermont on mixed single and double track trails with basic aid and town park amenities.

Trail runs at Alum Creek State Park offering morning Sun and night Moon events with loop distances from 7K to 26K and chip timing.

Experience a 5k mud run and garden party at the Wooden Shoe Tulip Farm. This annual event combines an adventurous obstacle course with a vibrant flower festival to support local charitable community projects.

Experience hilly trails and scenic park reserves in Annandale, Minnesota. Choose between a supported 50k or half marathon with on site lodging and a finish line right by Lake Sylvia.

The 15th Annual 5k Race to the Ledges in Concord, NH on August 8, 2026 features a short road and trail course and includes post-race brunch boxes to take away. Registration includes an adult 5 km entry and a free kids 5 km for ages 6 and un..