Trail Running Calendar United States 2026-2027

Mountain Tiger Diablo in Clayton CA is a 12.4 mile loop to the Mount Diablo summit and back, with about 4,000 feet of climbing and descending.

A timed trail event at Rothwell Park where participants complete as many one mile loops as possible within a chosen 3, 6 or 12 hour category; entries are available as solo runs or three person team relays and proceeds support Special Olympi..

A late-season trail running event on Antelope Island near the Great Salt Lake offering multiple distances and scenic desert ridgelines. The 2026 program adds a 75K to Frary Peak and a 10 mile singletrack loop around Bridger Bay.

A 3.1 mile community run through Overton Park where dogs are welcome and proceeds support Dogs 2nd Chance rescue in the Mid-South.

A trail race weekend in October 2026 near Hemlock, NY featuring a full marathon, a 15K and a point to point 5K across single track and gravel, with proceeds directed to local trail maintenance.

A 5K trail run on wooded, hilly camp trails in Bedford, Indiana on 10/10/2026; proceeds fund scholarships to send children to camp. All finishers receive a medal and top male and female receive awards.

Loop Krug Park in repeated timed laps with 3.6 mile, 6.1 mile and extended challenge options, with proceeds supporting St. Jude.

A trail running event in Columbus, Indiana on 10/10/26 offering 10K and 5K distances with a course map and online registration listed.

A community 5K and 1K kids race at Kilgore Creekside Trail that raises funds for the Kilgore ISD Education Foundation, with packet pickup the day before, prizes, and a non-racing supporter option.

A point to point 15K at Babcock State Park on October 10 2026 with long trail sections along Mann's Creek Gorge, fall colors, two aid stations and shuttle service.

Trail run and walk at Backbone State Park on October 10, 2026 with two route choices: a 4 mile loop and a 10K lake loop. Day of registration is available and proceeds support Backbone State Park.

Trail races of 5K, 10K, half marathon and 35K around San Pablo Reservoir on EBMUD trails, with chip timing, stocked aid stations, a cupless policy, and a 300-runner capacity.

A fatass trail run in Foresthill, CA offering 25 mile and 50 mile courses along the North Fork of the American River. Entry is free and field size is limited to 50 runners, with off trail sections and significant elevation gain.

Continuous loop endurance race at Eddie D. Jones Park in Keithville, LA. Runners complete repeated 3.1 mile loops to reach either 40 miles or 50 miles within a 12 hour time limit, with a centrally stocked aid station.

Loop based trail event at Eddie D. Jones Park featuring a clearly marked 3.1 mile (5K) loop on dirt and grass with a central aid station and lap based distances.

A charity running event in Solon, Iowa featuring a timed 5K and a Monster Mile, with all proceeds to the Arthritis Foundation to support pediatric rheumatic disease awareness.

First annual 4 miles trail run and hike at York River State Park on October 10, 2026. Dirt trails include single track and gravel, the format is non competitive, all finishers receive medals and leashed dogs are allowed.

A trail 50k in south Knoxville on October 10 featuring flowy singletrack, technical rock sections, about 4,000 ft elevation gain and aid stations on course.

A 12-mile out-and-back to Tesuque Peak in the Santa Fe National Forest, The Big T marks its 40th running on October 10, 2026, with proceeds benefiting Wings of America and a stated $5,000 fundraising goal.

Trail race in Gonzales Canyon with 10 Mile, 10K and 5K courses, featuring the steep locally named "Puke Hill" and limited to 300 runners.