Jefferson
Trail Running Calendar near Jefferson 2026-2027
Explore the top trail runs near Jefferson for 2026-2027! We've gathered 48 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
Trail runs and family friendly barn activities at Masker's Barn in Berkeley Heights, combining self guided routes, games, food and an all inclusive barn party.
Experience a diverse trail race at South Mountain Reservation featuring fire roads and single track trails. Choose from multiple distances ranging from a 5K to 50 miles with aid stations every three miles.
Multi-distance trail festival at Ringwood State Park Sept 18–20 2026 with looped courses, a central aid station, and options from a kids mile to 100 miles.
October 2026
Test your limits on a flat one mile loop at the Sussex County Fairgrounds. Choose from 6 to 72 hour timed races or certified marathon and 50K distances with full kitchen and shower access.
A community 5K and 2 Mile Walk at Garrett Mountain on October 11, 2026, with virtual and Tot Trot options; proceeds benefit the Fred Torres Memorial Scholarship Fund supporting Clifton High School athletes.
Trail run at Jungle Habitat in West Milford NJ with Half Marathon plus, 10K plus and 5K plus loops on a USATF sanctioned course featuring single track and fire road.
A community 5K at Duke Island Park on October 10, 2026, run on a flat, paved trail alongside the Raritan River. Proceeds support Family & Community Services of Somerset County, which provides mental health and addiction services.
Multi-distance running event at Saddle River County Park with looped laps, aid stations, timing, medals, and proceeds benefiting Bergen County Animal Rescue.
Loop-based races at Livingston Memorial Oval include timed runs, a marathon, a half marathon, and a Last Person Standing event on 0.44-mile laps.
A technical trail half marathon and 10K through Harriman State Park near Tuxedo NY, featuring steep climbs, rock fields, and significant elevation gain.
Community 5K at Garret Mountain in Woodland Park supporting Autism awareness, with vendors, free gifts, $25 registration, and medals for special needs children.
A hilly 5K trail race on 10/25/2026 at The Barnyard Sanctuary in New Jersey that passes pastures and rescued farm animal enclosures with proceeds to the sanctuary.
Tri-State New York Spartan Weekend in New Hampton, NY, Oct 31 to Nov 1, 2026 features Sprint and Super obstacle races, kids events, workshops and Hurricane Heat formats.
November 2026
A community 5K and 1 Mile walk at Central Park of Morris County on November 8, 2026, with in-person and virtual options supporting local housing services.
10K and 5K trail runs at Hillside Park in Andover NJ to benefit a free digital mammography program, with awards, participant shirts and on-site refreshments.
Experience the diverse terrain of South Mountain Reservation with a looped trail race offering 5K, 10K, and half marathon distances. Enjoy a mix of single track and fire roads with support provided at regular aid stations.