Trail Running calendar near Thornton 2026-2027

We have found 114 Trailruns within 80 miles of Thornton. See below where and when you can find the races.

A wooded trail race at Gunpowder State Park on August 9 with mostly single track loops of about 4 miles. Participants can run one loop for 4 miles or two loops for 8 miles.

A muddy 5K with obstacles, slides and mud pits at DREAM Park in Philadelphia on August 15, 2026. The event includes an after-party with music, food and beer, day-before packet pickup, and a Buy One & Give One donation program.

A three hour nighttime loop event at Roundtop Mountain Resort featuring a 1.5 mile course with 600 feet of climbing and a separate kids race for ages 12 and under. Headlamps are required and entries are limited.

GPS Too Hot to Trot is a four mile out and back race on the NCR Trail starting at the Paper Mill parking lot in Cockeysville, MD on August 19, presented as part of the Grand Prix Series.

A memorial 5K trail run at Genesee Valley Outdoor Learning Center in Parkton, MD, with a 5K, 1-mile walk, kids dash, team entries, and an In Spirit donation option. Proceeds support a scholarship fund and a post-race festival offers food an..

A weekend trail event at Camp Mack in Newmanstown PA featuring a night 3.5 mile race, chip timed 12/6/3 hour endurance on a 3.4 mile loop, and free kids courses with on site camping and aid at the start finish.

Stadion-format obstacle racing at a South Philly stadium on August 29, 2026, featuring a 5 km course with 20 obstacles, a kids race, team entry options, volunteer opportunities, and service member discounts.

September 2026

A community 5K trail run and One Mile Move As You Please at Thorncroft Farm in Malvern on September 3, 2026. Cross-country courses include varied terrain and obstacles, with an after-party featuring live music and food trucks and proceeds s..

Barn B Q Trail Festival on Saturday 9/5/2026 at Masker's Barn pairs a trail run or hike with a five hour barn party featuring BBQ, drinks, music and games. Ticket options cover adults, designated drivers, and children.

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.

A half marathon and a 10K at Lums Pond State Park on 09/06/2026 using Little Jersey and Swamp Forest trails. Routes include single track and wider trails and have a relatively flat elevation profile.

A camp-style trail ultra on a two-mile loop at Horseshoe Bend Park near Frenchtown, NJ, with frequent returns to a central Base Camp, night markings, varied aid station food, and unique wooden finisher awards.

Experience the 15th annual Sasquatch Preservation Trail Run in Seven Valleys. Choose between the 5K or 10K courses and explore the natural landscapes preserved by the Farm and Natural Lands Trust.

Test your endurance at Camp Hart with 4, 6, and 12 hour trail races through technical terrain and scenic hills. Enjoy a supported loop course along the Unami Creek with hot food and diverse trail sections.

Community running event in Lehighton, PA with two 5K course options and a 1 mile walk. Preregistration by September 1 guarantees a T-shirt and swag bag, and chip timing plus an on-site photographer are provided.

A fourth annual 5-mile trail run around Leaser Lake paired with a 100-yard youth Dragonfly Dash, family educational activities, shirts, refreshments, a midway water station, and prizes.

An autumn 5K mud run fundraiser at Gretna Glen featuring 20 plus obstacles, competitive chip timing and non competitive waves, plus a separate 1.3 mile kids run for ages 5 to 11. Proceeds support Gretna Glen Camp and its ministry.

Wicked Fast Marathon & Half Marathon Poconos runs along the Lehigh River on the D & L Trail with a consistent net drop of about 1%. Both distances are USATF certified and finish at the Outdoor Center in Lehighton.

IM ABLE Games in Reading, PA features multiple running distances, an obstacle Kaaginator Fitness Challenge, trifecta options and adaptive divisions for athletes with physical or intellectual and developmental disabilities.

A trail ruck march in Mt. Gretna, PA on September 25, 2026 with 4 mile and 8 mile adult and junior categories. Prize awards are based on weighted ruck participation.

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