Trail Running Calendar United States 2026-2027

Run a 10k trail race in Ohio's largest metro park. The event is free for club members and kids under 15, with a low fee for others. Experience chip timing and a scenic course through prairies and forests.

Night Claw is a unique nighttime trail race in Dinosaur Valley State Park. Runners can choose from distances including a 10K loop or timed events, with an optional chase game called the Claw Challenge. It's a cup free race on hilly, scenic..

The Lake Vian 5K Trail Run is held at Armstrong Park in Vian, Oklahoma. This community event offers a 5K trail race, a paved 1K fun run/walk, and a virtual 5K option. Proceeds support the Vian Community Foundation.

A single loop 50K ultramarathon in Muir Beach, California on Saturday, August 15, 2026. The course uses notable Marin trails, includes about 6500 feet of elevation gain, and features coastal and Bay Area views.

Trail run at Ferncliff Camp and Conference Center near Little Rock offering four loop-based distances from roughly 10k to 19.5 miles. Each loop includes an aid station and a water drop; the finish returns to the pool pavilion for food and r..

A community 5K and 1 Mile run/walk on the Pennsy Trail starting and finishing at Sister Cities Park, supporting Sister Cities of Greenfield exchanges with Kakuda, Japan.

A three leg team relay on the Ozark Trail combining trail running, mountain biking and paddling through Mark Twain National Forest. Short and long course options include river paddling along Courtois and Huzzah Creeks toward the Meramec Riv..

A 25K trail loop through Cook Forest State Park featuring a climb to the Cook Forest Fire Tower and riverside singletrack, with three aid stations staffed by local high school teams and packet pickup at Shelter 2.

A trail event at Riley Trails Park on August 15, 2026 offering a half marathon, 10K, and ruck divisions on wooded singletrack. Proceeds support the Egress Endurance Project for people pursuing recovery through endurance sport.

A trail 10k at Lexington Lake in DeSoto, KS, part of a six-race Tour de Trail series. Entries include a $5 donation to Urban Trail Co; courses are roughly 5.5 to 6.5 miles, cupless with water-only aid and finish-line snacks.

Trail races at Cheyenne Mountain State Park feature 5K, 10K and a 25K summit course with about 3,450 feet of elevation gain; the 25K is a Pikes Peak Ascent qualifier and the event raises funds for park trail projects.

Underdown Trail Races The Underdown Trail Races are grassroots trail runs and mountain bike races held on August 15, 2026, at the Underdown Trail system in Merrill, Wisconsin. The running events include a 60k, marathon, and half marathon. T..

This annual community event in Sun Prairie features a 5k race and a kids' fun run, with a course on neighborhood bike paths. Proceeds go directly to support the local high school cross country team.

The Watermelon Wobbler is a 5k trail run/walk/hike through scenic conservation land and a working farm. It features a varied off-road course and supports local agriculture. On-site parking is supplemented by a satellite lot nearby.

A trail 5k at Oak Mountain State Park featuring rugged terrain and significant elevation change. The event takes place on a Saturday in August. Registration is available.

The Running Wild 5K will take place in Roseland on Saturday 15 August 2026. You can run 5 kilometers.

This trail running event at Standley Lake in Westminster, Colorado features five distances from 5K to 50K on 100% dirt paths. The scenic courses offer varied elevation across the different race lengths. Bib pickup is available in Louisville..

This 50k trail run takes you through the Sierra Prieta mountains near Prescott, Arizona. It is scheduled for a late summer date in August 2026.

Climb It For Climate returns to Belleayre Mountain in the Catskills. Runners can tackle a challenging 25K or a shorter 8K mountain course. The event supports environmental causes with donations and carbon offset initiatives.

The Leadville Trail 100 Run is a legendary 100-mile ultramarathon in the Colorado Rockies. With over 15,000 feet of elevation gain and a summit over 12,500 feet at Hope Pass, it's a massive high-altitude challenge. Finishers within 30 hours..