Trail Running calendar near York 2026-2027

A four-date series of 10K trail runs in the Pickall Area of Patapsco Valley State Park from May 6 to May 27, 2026, with running time results and options to enter single dates or the full series.

Tough Mudder Philly at Plantation Field on May 23, 2026 offers 15K and 5K obstacle courses, an Infinity lap option, and spectator access across rolling hills and muddy terrain. Finishers receive medals, a shirt, a headband, and a finisher d..

A 12 hour ultramarathon at Spring Meadows Park in Boiling Springs, PA, run on a 1.4192 mile lightly rolling dirt and crushed rock loop. Solo and team entries count toward buckles and hoodies based on cumulative laps.

A trail and road mix half marathon and an all trail 5K centered at Sleepy Hollow Athletic Club. Both races run largely on the Horse Shoe Trail and support Berks County Special Olympics.

A 31.9-mile trail ultramarathon at Cowans Gap State Park featuring about 5,800 ft of elevation change on the Tuscarora Trail, seven aid stations, and two time cutoffs; prior ultramarathon completion is required for entry.

A four-date series of 10K trail runs in the Pickall Area of Patapsco Valley State Park from May 6 to May 27, 2026, with running time results and options to enter single dates or the full series.

A backyard ultra in Knoxville, Maryland where runners complete a 4.167 mile yard each hour until only one finishes. The event includes a 1-mile option, offers prize money for top finishers, and serves as a Backyard Ultra qualifier.

Test your endurance at Operation CENTURION on the Rock Creek Trail near Washington D.C. Complete ten 10 mile loops for a total of 100 miles within a 32 hour time limit.

Trail run and walk on May 30, 2026 at Gentle Giants Draft Horse Rescue in Mt. Airy, MD featuring 1 mile and 5K courses across forest trails and open pasture with draft horses on the farm.

A longstanding five-mile memorial run on the C&O Canal Towpath in Williamsport, MD, held June 6, 2026, with regular and student entries, chip timing, technical T-shirts, and awards for podium finishers.

A community trail event at Opossum Lake Park offering a 6 mile obstacle course, a 4 mile run, and a 4 mile walk on mixed terrain, with chip timing, age-group awards, and proceeds benefiting the Friends of Opossum Lake Conservancy.

Experience a timed ultra marathon on technical single track trails in the Blue Mountains. Run as many 3.5 mile loops as possible through the shaded landscapes of the Bashore Scout Reservation.

Trail races in Colonel Denning State Park and Tuscarora State Forest offering a 15K with about 2,700 feet elevation and a 25K with over 4,000 feet. Aid stations are on course and entries are limited to 120 participants.

Trail Trotters 5K & Fun Run at Promise Landing Farm in Upper Marlboro offers a farm-trail 5K and a fun run to support the farm's riders and programs. The event includes free parking, a shirt deadline of May 16, no pets, and refunds up to se..

An annual trail event on June 11, 2026 at Paradise Farm Camps in Downingtown featuring a five mile trail run, a 5K and a 1.5 mile family walk or run, with all proceeds supporting East Bradford Township public trails.

A last-person-standing backyard ultra on a 3.4-mile, 350+ ft elevation trail loop at South Mountain Preserve, with a chip-timed nighttime Blackout loop, zero carbon measures, and community donation programs.

The Husky Run 5K is a 5K running race on June 14, 2026 at the Ma and Pa Trail Williams Street trailhead in Bel Air, Maryland. Registration runs from March 27 to June 10 with a $20 fee.

A Juneteenth trail event in Germantown on June 19, 2026 offering 6K and 12K courses around Button Farm and the Schaeffer Farm Trails, with virtual options and tiered registration fees.

A night trail relay in Paradise, PA where teams pass a baton and collect glow rings to count loops. Runners aim to complete as many 1 mile loops as possible in a 3 hour 24 minute timed period; headlamps recommended.

A blue-blazed out-and-back trail event near Frederick, MD offering 50K and 25K options on rocky, shaded trails with stream crossings, mandatory hydration, limited entries and staffed aid stations.