Trail Running calendar near Thornton 2026-2027

We have found 119 Trailruns within 80 miles of Thornton. See below where and when you can find the races.

A 10K trail race at Blue Mountain Ski Area on July 12, 2026, run on wooded singletrack with steep climbs. Part of a Spartan OCR festival weekend, the event uses gun timing, has a 3 hour finish cutoff, and registrations are open.

A summer trail race at Gunpowder State Park in Sweet Air, Maryland, listed as 7 miles but described as roughly 8 miles with county crossings, rolling hills, water crossings and occasional mud. Capacity is limited to 100 runners.

Test your endurance on the 15K Border Trail featuring rolling hills, woods, and water crossings. Support Eastern Pennsylvania cancer patients while enjoying scenic vistas and a community focused trail racing experience.

Experience a unique endurance event at Mount Tammany featuring repetitive loops with significant elevation gain. Participants face escalating weight challenges in a test of physical persistence where only one athlete claims the gold.

August 2026

Test your endurance at Cooper River Park on a fast and flat 3.75 mile paved loop. Choose from 12 hour, 24 hour, or 100 mile challenges with great views of Philly and full aid station support.

Run a technical 8K trail through vineyards and along the river at Bohemia Manor Farm. The chip timed event includes a tech shirt and wine glass. Celebrate after with a waterfront party featuring live music and food.

A unique "last person standing" trail run in Kempton, where runners complete 1.6-mile laps against a shrinking clock. The event culminates in a communal post-race gathering with food and sponsored refreshments.

Honoring September 11 heroes, this arena climb at TD Bank Ballpark features a 2,200 foot track through stadium aisles. Join a timed stair challenge or a flat concourse walk to support the Tunnel to Towers Foundation.

Experience a rugged all terrain race through a working Century Farm in Southern York County. Run across grassy trails and muddy creeks to support cancer patient care while enjoying scenic farm views.

Join the first annual Montey's Pack Rescue Run 5K in Collegeville, PA. This event features a 5K run/walk, a kids' fun walk, and a virtual option, with all proceeds supporting local animal shelters. Participants can run or walk on paved and..

A self-supported ultramarathon at Killen's Pond State Park in Felton, DE offering 50 mile, 50K and a 12 hour option on a mostly dirt 3.1 mile loop. Manual timing, water provided, and hot humid summer conditions.

Test your endurance at the Wildwood Navy Seal Challenge with ocean swimming and beach running. Navigate sand and water obstacles in individual or team categories on the New Jersey shore.

The Savage Race - Poconos will take place in Albrightsville on Saturday 15 August 2026. You can run between 3 and 5 miles.

Experience a weekend of adventure featuring night trail running and timed endurance loops at Camp Mack. Enjoy free on site camping and inclusive categories ranging from a kids run to a twelve hour challenge.

Experience an urban obstacle course race at a major sports arena in Philadelphia. Tackle five kilometers and twenty obstacles through stadium stairs and concourses in this fast paced fitness challenge for adults and children.

September 2026

Explore a beautiful seventy acre equestrian farm in Malvern through a cross country trail run or a move as you please mile. Enjoy a community celebration featuring live music and pony meet and greets to support horse care.

Test your limits in Kennedyville with the Savage Race or Savage Blitz. Navigate miles of mud and over 25 obstacles to earn exclusive medals and state pins at this premier Maryland event.

Celebrate Labor Day at William Heritage Winery with a scenic 5K trail run or a 1 Mile walk. Enjoy live music and vineyard views while participating in chip timed races for all ages in Mullica Hill.

Experience an endurance challenge on a two mile loop through the woods of Frenchtown New Jersey. Choose from multiple timed events or a hundred mile race and enjoy on site camping with gourmet meals and handmade wooden awards.

Run along the Lehigh River on the hard packed D and L Trail. This USATF certified course features a consistent downhill grade and serves as a Boston Marathon qualifier in the Poconos.