Trail Running Calendar United States 2026-2027

Trail running at Robert Treman State Park with 5K, 10K and half marathon routes featuring wooded climbs, Lucifer Falls gorge, singletrack descents, early packet pickup and on site parking.

A 3-mile obstacle race in Downtown El Paso on May 31, 2026 featuring 15+ obstacles, on-course safety measures, hydration and recovery zones, and entertainment along the route.

Experience a scenic point to point run from Plover to Amherst along the Tomorrow River Trail. This half marathon concludes at the Central Waters Brewing Co for a memorable finish in Wisconsin.

An 80s themed race day at Eisenhower Park offering in person and virtual distances from a kids dash to a chip timed half marathon, with a costume contest, DJ music, medals and age group awards.

Trail and virtual 25k and marathon events at Carvins Cove on May 31, 2026, featuring steep climbs and long descents, spring blooms, and RNUTS qualification.

A grassroots trail half marathon in Sky Valley, GA, offering clock times only and no shirts or awards. Day-of registration is cash only and volunteers receive a complimentary entry to the next race.

A community 5K along the Lansing River Trail starting at Lansing Shuffle on May 31, 2026, organized by the Ingham County Bar Association Young Lawyers Section. Entry includes a t-shirt if registered by May 13 and a $10 Lansing Shuffle gift..

SwimRun Knox on May 31, 2026 features a 12.25 mile swimrun at Mead's Quarry and Ijams Nature Center plus a 3.18 mile trail 5k and a 13.1 mile trail half marathon, with team and individual entry options.

The second annual Live Free Fun Run and Festival in Woburn features a scenic 2.5 mile off-road run or walk around Horn Pond. The festival includes food trucks, a DJ, kids activities and tables from over 25 local mental health and substance..

A scenic loop at Sky Meadows State Park on May 31, 2026, offering 5K and 10K courses with views of fields, streams and Turners Pond. Walkers are welcome and virtual entries are available with medal and shirt options.

Trail races on May 31, 2026 in Arnold, CA offer distances from 5k to a new 50k ultra across the Arnold Rim Trail and White Pines Lake Park, with proceeds supporting the Arnold Rim Trail Association.

Experience the only ultramarathon in North Park at the South Ridge Trail Challenge. Choose from multiple distances including a 5K and a 50K relay through the scenic trails of Western Pennsylvania.

A scenic *5 km* cross country race at the Leadville National Fish Hatchery on May 31, 2026, with dirt road, path and trail sections. Awards are given by age group and youth registration is free.

A women-only 5K obstacle mud run at Music City Raceway in Nashville on May 31, 2026, with 18+ obstacles. The non-competitive event welcomes females aged 7 and up and supports the National Breast Cancer Foundation.

A multi-distance trail run in the pine-filled Teanaway Community Forest near Cle Elum, Washington, with routes on logging roads and small trails, notable elevation gain, staffed aid stations, and camping nearby.

On 05/31/2026 in Billings, Montana, the Billings Skyline Races stage a half marathon, a 30K, and a virtual option along paved ridge and park trails with views of the Yellowstone Valley and the Beartooth Mountains.

Experience the FXBG Trail 5 Miler at Motts Run Reservoir in Fredericksburg. This five mile trail race features three distinct climbs and over 300 feet of elevation gain along a scenic and flowing course.

A repeat-loop trail race at Tatum Park in Middletown, NJ offering 1-lap, 30 km, and 50 km options with one main aid station and RFID lap timing. Proceeds support MissionCleanWater's clean water programs.

A trail race in Parker CO on May 31, 2026 featuring a Dipsea-style staggered start for the 10k, a steep stepped incline, rolling singletrack, and a kids 1 mile route to the top and back down.

A one-day festival in Berkeley on May 31 featuring free road and trail runs, demo shoes from major brands, a $10,000-plus raffle, food and beer, and fundraising for youth running in Oakland.