Trail Running calendar near Holtwood 2026-2027

A backyard style ultra in Knoxville MD on May 30, 2026 where runners complete a 4.167 mile loop each hour until one remains. A 1 mile event runs for 24 hours with additional tie breaker miles if needed.

A 5k and 1 mile trail event at Gentle Giants Draft Horse Rescue in Mt. Airy, MD on May 30, 2026. The route crosses a 340 acre farm with draft horses nearby and features food trucks and mounted archery demonstrations.

ROCK CREEK 100 is a 100 mile looped trail event near Washington D.C. held May 30–31, 2026, consisting of ten 10 mile loops with about 8,200 ft of climbing and a 36 hour cutoff.

A summer half and full marathon on a shaded bike path through Pennypack Park with multiple aid stations, disposable chip timing and a German-themed post race party. Finishers receive medals and preregistered runners are guaranteed a 1/4 zip..

Goliathon is a nonprofit ninja warrior style obstacle course run in Mullica Hill, NJ, with a roughly four mile course and 12 tiered obstacles (G1 G2 G3). Teams and individuals may compete; proceeds support clean water projects.

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 a rugged 15K and 25K with substantial elevation gain, limited to 120 runners and supported by multiple aid stations.

A trail event in Wissahickon Valley Park on June 6, 2026 offering a 10K race and a 1 mile family nature walk. Proceeds support Friends of the Wissahickon for trail and watershed stewardship.

The Run for Woods 5K will take place in Langhorne Manor on Sunday 7 June 2026.

Trail Trotters 5k & Fun Run is a community trail event at Promise Landing Farm in Upper Marlboro on June 7, 2026. The event features a 5k and a fun run; adult registration includes a T shirt and concessions with live music.

The Jerseys4Kids Run Against Pediatric Cancer will take place in Bala Cynwyd on Sunday 7 June 2026.

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 at South Mountain Preserve with a 3.4 mile loop and 350+ ft of climb over rugged terrain. The event also features an evening Blackout one loop race and a beer mile.

Trail races on June 19, 2026 in Germantown, MD offering 6K and 12K courses around Button Farm and the Schaeffer Farm Trails. Walkers and several virtual entry options are available.

A night trail relay in Paradise, PA where teams and solo runners try to complete as many loops as possible in about 3 hours and 24 minutes on a marked 2 mile course. Team batons, glow rings, headlamps and on site divisions are used.

A rugged out-and-back trail race near Frederick, MD, offering a 50K and a 25K Half Cat on rocky, shaded singletrack with stream crossings, three aid stations, and mandatory on-course hydration.

PUSO 5k & 10k on June 20, 2026 follows the Chesapeake & Ohio Canal path in Georgetown, Washington, DC. Runners and walkers can choose either a 5 km or 10 km distance, with registration fees varying by period.

An all-day looped trail event at Tyler State Park on June 20, 2026, with alternating-direction 5 mile trail and paved loops over an 11 hour window. Entry is $25 and Bucks County Road Runners members may be eligible for free or reduced entry..

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.