Trail Running calendar near Princeton 2026-2027

A multi-day timed running festival at the Sussex County Fairgrounds with a certified 1-mile loop, options from 6 to 144 hours plus Marathon and 50K, night lighting, central aid station, camping and electronic lap timing.

A morning **5K** held as part of the Fair Hill Scottish Games on May 15, 2027, in Elkton, MD, with on-field entries accepted, an entry fee that includes admission, and cash prizes plus trophies for top finishers.

A technical mountain trail race in northern New Jersey offering a 50K with over 7000 ft gain plus 10 mile and 5 mile options, map requirements for the 50K, mandatory gear checks, and aid stations on the longer courses.

Tough Mudder Philly on May 22, 2027 offers 5K and 15K obstacle runs plus an Infinity multi‑lap option and spectator access. The Plantation Field course features rolling hills, riverbed crossings, thick mud and a rural setting about an hour..

Scout Fest on May 22, 2027 at Amity Community Park features a timed 5K, a 1.5 mile walk, and a family festival with food trucks and inflatables. Proceeds support local Scout leadership and programming.

A two distance event at Rockland Lake State Park with a flat, accessible 5K and a rugged 10K up the Long Path to Hook Mountain Summit. The 10K features 1,300 ft of elevation gain and one on course aid station.

Trail races at Dansbury Park feature timed 10K, a 5K race and a 5K walk with live results, finish line photos, age-group awards, and pool access after the event.

A German-themed summer running event in Pennypack Park offering 10K, half and full marathon distances, a trail section called Mount Cuckoo, Bavarian post-race festivities, and unique German awards.

Obstacle course weekend at Blue Mountain Ski Area in Palmerton, PA featuring Sprint 5 km, Super 10 km and kids races through steep, forested terrain.

A 10K trail race at Blue Mountain Ski Area on July 12, 2026, run on wooded singletrack with steep climbs. Part of a Spartan OCR festival weekend, the event uses gun timing, has a 3 hour finish cutoff, and registrations are open.

Social trail runs in Edison NJ with secret start locations, 2 and 5 mile options, a post-run party, volunteer perks, and an organizer-listed waiver and hazards.

Trail hash run in Middlesex County with a 5-mile Eagle Trail and a 2-mile Turkey Group Run, plus a post-run social and volunteer benefits.