Trail Running calendar near Flemington 2026-2027

Mountain trail event at Harriman State Park on April 4, 2026 offering a half marathon, a 10K and a 10K ruck. Rugged technical courses with substantial elevation gain and a capped field size.

Timed loop trail races at South Mountain Reservation in South Orange on April 4, 2026. Options include a 1.88 mile loop, a 6K two loop option, and 1 hour, 3 hour and 6 hour timed events.

A give or take five mile loop through Jacobsburg State Park with singletrack and gravel sections. Options include a 5 mile event or three hour and six hour timed efforts, and the event follows a zero carbon approach.

Run the Bunny Trail 5K at Bethpage State Park for a scenic start on the polo field and winding soft trails with a cross country feel. Family friendly with free kiddie run and virtual option, benefiting the Never Stop Running Foundation.

On April 11, 2026 the Philadelphia Trail Marathon runs in Wissahickon Valley Park with a 13.1 mile loop or a full marathon of two loops on mostly single track trails and notable elevation.

The Great Marsh Mud Mosey on April 11, 2026 is the third annual event in Elverson PA offering a roughly 5K run and a 1 mile walk across marsh, farmland and muddy grassy sections with post race vendors and search dog demonstrations.

Enjoy a scenic run or walk through maintained natural trails at the Institute Woods 6K in Princeton on April 11, 2026. Choose a 6K or a relaxed 3K, enjoy post run refreshments and a race shirt for early registrants.

A multi-distance trail running event at Forever Farm in Alburtis, PA on April 12, 2026, featuring private singletrack, significant elevation gain, fully stocked aid stations, post-race food and drink, and awards for finishers and relays.

A spring event at the Stamford Museum and Nature Center on April 12 2026 featuring a scenic 5K through farm and woodland and a 0.3 mile kids run past farm animals. Proceeds support the museum and nature center.

A trail running event at Forever Farm in Mertztown on April 12, 2026, featuring 5K, 10K, half and full marathons, and an ultra relay on private singletrack with aid stations, food and drink, finisher awards, and cash prizes for top relay te..

A community trail event in Irvington on April 12, 2026 featuring a 5k trail run and a 0.6 mile kids 1K for ages 10 and under, with a portion of proceeds supporting the Irvington Bulldog Booster Club.

The Screamin' Hill Scramble will take place in Allentown on Saturday 18 April 2026. You can run 5 kilometers.

Join the final Conquer The Trail Race on April 18 in Dobbs Ferry at Mercy University for a scenic 7.5k on the Croton Aqueduct Trail. Celebrate Mercy's 75th, snag a commemorative shirt, and support the Mav Market.

Celebrate Earth Day with a scenic trail run at Pennypack Trust featuring a family Story Stroll 1 mile plus 5K and 10K routes through rolling woods. Proceeds support preservation of over 950 acres and the day ends with snacks and prizes.

Join the 10K Run for the Osprey at Lacawac Sanctuary on Sunday April 19 2026, with a scenic 10K trail run and a family friendly 5K walk supporting sanctuary conservation. Expect wooded trails, osprey sightings, and awards for top finishers.

The Wawayanda Trail Fest will take place in Vernon Township on Saturday 25 April 2026. You can run between 13 and 100 kilometers.

A 50 km out and back on the Schuylkill River Trail from Saint Michael's Park in Mont Clare to Conshohocken, offered as solo, three and six person relay, and virtual options. The finish area near Phoenixville features live music and food tru..

A two-race event at Birchwood Lake in Mountain Lakes, New Jersey on April 25, 2026 featuring a scenic mostly flat loop through woods and around lakes. Events are open to men and women age 30 and over.

Join the XC Summer Series, a friendly Tuesday night 5K in Parsippany with chip timing and after race refreshments. Open to all ages and abilities, walkers welcome and affordable single night or full series pricing.

Patriot Power 5K on April 29, 2026 in Reading, PA offers in-person and virtual 5K options plus a 1-mile fun run; proceeds benefit Team RWB and participants receive swag and a finisher medal.