Trail Running calendar near Princeton 2026-2027

Two measured trail races at Evansburg State Park on October 11, 2026, with **14K** and **6.5K** options, water stops, age-group awards, and a mostly flat, runnable course.

Test your endurance at Autumn Lake Winery with a unique hourly 5 km challenge. Choose from 6, 12, or 24 hour individual and relay events across trails and vineyards in Williamstown.

Experience Long Islands scenic Robert Moses Causeway in this multi day running event. Support local veterans while choosing between marathon, half marathon, 10k, and 5k distances with finisher medals for all participants.

A trail running festival at Lums Pond State Park on October 17, 2026, offering 12K and 24K laps plus 12-hour solo and relay formats, chip timing, aid stations, event clothing, and post-race food.

A community cross-country 5K in Haddonfield on October 17, 2026 with pre-race packet pickup, onsite registration options, entrant T-shirts, awards by overall and age groups, and accommodations for visually impaired participants.

A non competitive winter running series of six loops totaling 66 miles along the Delaware River in NJ and PA from October 2026 to February 2027. Limited to 100 registrants, includes aid stations and a handmade finisher award.

The Livingston Oval Marathon will take place in Livingston on Saturday 17 October 2026. You can run between 21 and 42 kilometers.

A community 5K and 1 mile fun run and walk at Tamaqua Area High School on October 17, 2026, raising funds for a memorial scholarship.

A technical trail event in Harriman State Park offering 13.1M and 10K on rugged singletrack with steep climbs, limited to 175 participants.

Trail and 5K races at Hillside Park on October 18, 2026, benefit a free mammography program. A kids fun run for ages 5 to 12 is included, with chili and vegetarian food and timing by Compuscore.

The 4th annual Chesterfield FALL Terrain 5K at Fenton Lane Park on October 18, 2026 features a 5K run/walk and a 1 mile Fun Dash, supports local charities, offers custom race shirts and age group awards.

Trail races at Parvin State Park offer a half marathon and a 6 hour lap event on a mostly trail lollipop loop. The event is cupless and uses an aid station at the start and finish.

Trail ultramarathon in Titusville, NJ with 50K and 25K courses that start and finish at Washington Crossing Park. The 50K features technical Rock Hopper trails and multiple aid stations.

Trail race in Pottstown, PA offering 15k and 30k on technical park trails with rocks, roots and varied single and double track. Aid stations provide fruit, packaged snacks and hot options; custom and self supported fueling is allowed.

A trail-based 5K and family 1 mile fun run in Poricy Park with a Halloween costume theme and prizes, raising funds for 180 Turning Lives Around. Options include a timed 5K, a fitness walk, and a family fun run.

A community 5K in Massapequa Park on October 24, 2026 featuring a scenic course through Massapequa Preserve, awards, post-race food and live results.

A 25K trail race at Ridley Creek State Park in Glen Mills, PA on October 25, 2026. The single loop technical course gains about 1800 feet, includes three aid stations and has a five hour time limit.

The inaugural Barnyard Squatch 5K is a hilly trail race across The Barnyard Sanctuary's nearly 200-acre property in Blairstown, NJ, with over 500 feet of climbing and a route past rescued farm animals. All donations go to the sanctuary.

Obstacle course weekend at Sunflower Valley Farm near New Hampton NY with Sprint 5 km, Super 10 km, kids races, Hurricane Heat formats and spectator options.

A Halloween-themed 5K and 1 Mile at Arasapha Farms in Glen Mills that benefits the Edgmont Township Fire Company No.1, with timed 5K results, commemorative shirts, safety costume rules, and a monster costume contest.