Trail Running calendar near Mahwah 2026-2027

A December trail ultra in Holmdel Park, New Jersey using a just over 4.5 mile loop repeated for Halfish and 50 kmish distances. The event supports MissionCleanWater and uses RFID lap timing with an aid station at the start and finish.

A weekend trail event in Blydenburgh County Park featuring a Backyard Ultra with 4.167 mile hourly loops and a separate 4.16 mile lapping race. A portion of proceeds supports the Long Island Greenbelt Trail Conference.

Experience an exclusive trail run through the scenic Roosevelt Forest in Stratford. This 5K event features a natural off-road course limited to a small group of participants and includes custom finisher medallions.

Trail races at South Mountain Reservation include 5K, 10K and 13.1 mile looped courses with aid stations every 3 miles. Courses use fire roads, single track, hills and some pavement and offer advance and day-of registration.

A January trail party in West Orange with a 5K loop plus timed 3 and 6 hour options, rucking divisions, and fundraising for the South Mountain Conservancy.

A onesie-themed trail 5K at Ramapo Valley County Reservation featuring a flat, scenic loop around Scarlet Oak Pond and accessible course options.

Trail races on a 10 mile loop at South Mountain Reservation offering 50M, 50K, 20M and 10M with marked trails, three aid stations per loop, timing, SWAG, and awards for top three male and female finishers.

Timed loop races at the Livingston Oval offer 1, 3, 6 and 12 hour options on a USATF certified flat course, with aid station support, awards for top finishers, and participant cap or hat with a no-swag discount available.

Looped trail race in South Mountain Reservation offering 11M, 20M, 50K and 50M over three marked loops with varied terrain and on-site aid.

A six-hour trail ultra at Roosevelt Forest featuring a 2.3-mile loop with 191 feet of climb per lap, chip-timed laps, on-course aid and food, podium awards, medallions for over four hours, and a limited field supporting local charities.

A late-March trail event at Bethpage State Park offering a 5K trail run, a free kiddie fun run, race shirt, on-site refreshments and a virtual participation option.

A community 5K run and free kiddie run at Bethpage State Park with trail terrain, a virtual option, and donations benefiting the Never Stop Running Foundation.

A mountain trail event at Harriman State Park near Bear Mountain on April 3, 2027 offering 10K, 10K ruck and 13.1M courses on rugged, technical singletrack with marked routes, aid stations, rucking divisions, and adaptive support.

Trail races on a 25K loop at Sleeping Giant State Park featuring technical singletrack, steep rock scrambles, and an optional second loop for the 50K.

A community trail event in Cross River, NY featuring a hilly wooded 5K, a 4K walk through the main trail, and a 200 m kids dash on the contest track. Registration opens 8/24/2026 with limited pre-registration t-shirt incentives.

A 5K trail run and walk at Blydenburgh County Park in Smithtown, NY on mixed surfaces through park trails. The event supports Last Chance Animal Rescue and includes onsite hydration, restrooms, same day results and photos.

Shore2Shore in East Islip, NY on April 17, 2027 follows the Greenbelt from north shore to south shore and offers 50K and 25K distances.

Two days of mountain obstacle racing at Mountain Creek Resort featuring Sprint, Super, Beast, Ultra and kids races across steep terrain.

Women and non-binary runners take on 5K, 10K, or a timed 4 hour loop on the trails around Lake Mohegan in Fairfield, CT.

A mountain trail run in Ellenville, NY on April 24, 2027 offering a 25K (about 17 miles) and a 10 mile course across technical singletrack, cliffs and carriage roads, with aid stations and support for land conservation charity Run Wild, Inc..