50K trail ultramarathons in New Jersey, United States

Woodland trails and fire roads across rolling hills with technical and runnable sections, featuring 50K and 50-mile courses in South Mountain Reservation.

Stunning Wawayanda State Park trails with 100 miler, 100K, 50 miler, and 36-hour race options; generous cut-off times; nonprofit support

Certified one-mile loop of pavement and crushed gravel at Sussex County Fairgrounds; flat, fast and highly runnable for 50K to 100 miles.

South Mountain Reservation trails through scenic woods in West Orange, NJ, featuring a 50K route with challenging distance for runners and hikers

Seven loop course with rolling hills, open fields, and New Jersey farmland; over 32 miles on 95% trails and double track in Holmdel Park.

South Mountain Reservation trails in Maplewood, with a roughly 10-mile wooded loop format for 50K and 50-mile distances.

50-mile trail event in the South Mountain area, with a welcoming, community-driven atmosphere and local trail running and hiking focus

Flat 50k off-road trail course with professional timing, water stops, and finisher medals

Technical 6.7-mile trail loop with 1,750 feet of ascent around Mt Tammany; demanding 30K and 50K+ distances for seasoned ultrarunners

Hilly Northern Jersey loop with rhododendron tunnels, marsh bridges, gravel roads, and single tracks through Wawayanda Park’s lush scenery.

Scenic 50k route through Voorhees State Park with approximately 4500 feet of elevation gain and views of the observatory

Woodland trails through South Mountain Reservation, nature-filled routes and tranquil forest scenery in Essex County

Lush forest trails and rolling terrain on a well-marked loop through South Mountain Reservation, featuring 50K and 50-mile options with varied elevation.

Rugged northern NJ course with boulder fields, river crossings, steep climbs over 7000 feet, and scenic views including the New York City skyline

50km repeatable loop through rolling Monmouth County terrain, with open fields, wooded trails, grassy sections and park paths.