Trail Running calendar near Millersburg 2026-2027

Tough Mudder Philly on May 23, 2026 at Plantation Field offers 5K, 15K and Infinity obstacle runs with named obstacles, finisher items, spectator festival access, and group and volunteer options.

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 50K at Cowans Gap State Park on May 24, 2026, with about 5,800 feet of climb on the Tuscarora Trail. Entry is limited to 75 and requires prior ultramarathon experience.

Experience the rugged beauty of the Endless Mountains in Pennsylvania with this technical trail event. Runners navigate waterfalls and vistas across two demanding distances with comprehensive aid station support and post race meals.

A 25K and a half marathon through remote sections of Tiadaghton State Forest, featuring technical single track, stream crossings and scenic vistas. The event enforces strict cutoffs and limits the field to 250 entrants.

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 offering 15K and 25K routes with significant elevation gain, multiple aid stations, and a strict 120 runner limit. Spectator access is limited and overall winners receive awards.

A three night camp in Lock Haven, PA that runs real night sections of the Eastern States 100 course under guided support. Includes lodge lodging, pre-run meals, breakfasts, transport between trailheads, and limited on-course aid.

A community trail event at Paradise Farm Camps on June 11, 2026, offering a 5-mile run, a 5K, and a 1.5-mile family walk/run. All proceeds fund East Bradford Township's public trail program and trail development.

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.

A trail race near Montoursville, PA featuring an 8 mile Scramble on the Loyalsock Trail and a 4.5 mile Half Scramble. Limited to 200 participants, with awards by age group and proceeds supporting local cross country scholarships and Think B..

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 trail event in Sproul State Forest offering a 10 km course with a 3.0 mile climb up McCloskey Mountain and a 3.7 mile descent, plus a 5 km option. Both distances are part of the 2026 Rocksylvania Trail Series.

A free kids trail event in North Bend, PA for ages 12 or under with a flagged course of about 2.75 miles, volunteers, an aid station, and an after race lunch. The festival is part of the Rocksylvania Kids Trail Series.

Experience a scenic 5 mile trail run through Lancaster County Central Park featuring grass paths and water crossings. Compete for age group awards and enjoy a post race prize raffle in a beautiful natural setting.

Test your endurance on a 2 mile paved loop at the Rodale Park 12 Hour Challenge. Cycle, run, or walk to support the development of the September 11th National Memorial Trail.

Trail races at Rocky Ridge County Park near York, PA on June 27, 2026 offering 50K, 33.3K, 16.7K and 10K over rocky, rolling terrain with significant climbs. Registration closes June 23.