Trail Running calendar near Princeton 2025-2026

The Pocantico Hills Marathon, held in Sleepy Hollow, NY, offers both marathon and half marathon distances through the scenic Rockefeller State Park. The single-loop courses feature rolling hills with picturesque views of the Hudson River and Palisades, passing fields, stone walls, bridges, lakes, st..

Forbidden Run Fest is a trail running event held in Wissahickon Valley Park, Philadelphia, PA, celebrating one of the city's most scenic parks. The race offers three distances: 10K, 10 miles, and a Half Marathon+ (approximately 14 miles). The course features a mix of smooth gravel trails, compacted..

NYC Trail Mix is an annual ultra trail running event held in Staten Island, New York, featuring distances of 50 miles, 50K, and a half marathon. The course showcases over 35 miles of trails through the greenest parts of New York City, including Blood Root Valley, High Rock Park, La Tourette Park, an..

The South Vineland Thanksgiving Run is a cross country style race held annually at Anthony Campanella Park in Vineland, New Jersey. This approximately 3-mile event follows the well-known cross country course used by Vineland High School and the Vineland Grand Prix summer series. Open to runners and..

The Squatchy Leftovers Trail Race takes place at South Mountain Reservation in West Orange, New Jersey. Scheduled for November 29, 2025, it offers multiple distances including a 50K (10 loops), 25K (5 loops), 10K (2 loops), 5K (1 loop), and a 1-mile kids run. The course features a 5K loop with a mix..

Rob's Trail Run Edition is a trail running event held in Woodbury, New York, at Stillwell Woods Preserve. Scheduled for November 30, 2025, the event features two main races: a 5K Adult Trail Run for participants aged 19 and older, and a 5K High School or Youth Trail Run for those 18 and under. The c..

The Santa's Summit 10k is a scenic and challenging trail run held at Bull Run Marina in Clifton, Virginia. The course follows the Bull Run Occoquan Trail, featuring hilly terrain with a mix of out-and-back and one-way sections. Participants can choose between 5k and 10k distances, both chip-timed, a..

The PPTC Endurance Fest is an ultramarathon event held in Brooklyn, NY, featuring 50-mile and 50-kilometer race options. The race takes place on a looped course within Prospect Park, consisting of 9 or 15 laps of a 3.33-mile loop. This event honors New York City's road ultra heritage, following in t..

The Holmdel Classic is a challenging end-of-year trail race held in Holmdel Park, Monmouth County, New Jersey. Featuring a 4.65-mile loop with 584 feet of elevation gain, the course covers diverse terrain including grass, dirt, rocks, roots, gravel, pavement, and varied inclines. Participants can ch..

The Frosty Looper 8-Hour is an ultrarunning event held at Cooper River Park in Pennsauken, NJ. Participants run as many laps as possible on a fast, flat 3.75-mile paved loop around the river, featuring scenic views of the Philadelphia skyline and water. The course includes mostly flat terrain with s..

Naked Nick is a trail running event held in Leesport, Pennsylvania, featuring 25K and 50K distances around Blue Marsh Lake. The course is a lollipop-shaped route on the lake's south side, combining 80% single-track trails and 20% gravel roads, with moderate elevation gains of approximately 1,500 fee..

The Frosty Fat Sass is an annual trail running and hiking event held at South Mountain Reservation in West Orange, New Jersey. Participants can choose from a 5K loop, a 3-hour, or a 6-hour endurance challenge, with a new rucking division available for the 3-hour event. The course features a mix of w..

The Mahlon Winter Donut Trail Run & Hike is a scenic trail running event held at Saffin's Pond in the Mahlon Dickerson Reservation, Lake Hopatcong, New Jersey. Scheduled for February 8, 2026, it offers three race distances: a 5-mile loop, a 10-mile course consisting of two loops, and a 13.1-mile hal..

The Squatchy Onesie Fest 5K is a fun and unique trail running event held at Ramapo Valley County Reservation in Mahwah, New Jersey. Participants are encouraged to wear their favorite onesies, adding a playful atmosphere to this winter race. The course is a scenic, mostly flat "lollipop" loop around..

The Livingston Oval Ultra, held in Livingston, New Jersey, is a timed running event featuring 1-hour, 3-hour, 6-hour, and a new 12-hour race distance for 2026. Participants run laps around a USATF-certified, fast, and flat oval course, aiming to cover as much distance as possible within their chosen..

The Squatchapple Trail Race takes place at South Mountain Reservation in West Orange, NJ, offering distances of 11 miles, 20 miles, 50K, and 50 miles. The course features three loops of varying lengths (4, 5.5, and 7 miles) combining carriage roads, singletrack, and some road crossings, with signifi..

The Naked Bavarian is an affordable ultra trail running event held at Blue Marsh Lake in Leesport, Pennsylvania. Offering 20- and 40-mile distances, the course features a lollipop loop with mostly runnable trails—80% single track and 20% gravel roads—covering approximately 2,000 feet of elevation fo..

Big Bear Squatch North is a challenging trail running event held at Harriman State Park in Bear Mountain, New York. Featuring a half marathon and 10K races, including new rucking divisions with lightweight (15 lbs) and heavyweight (30 lbs) packs, the course offers rugged, technical trails with steep..

The Rockland Rad Run is a trail running event held at Forever Farm in Mertztown, Pennsylvania, featuring a half marathon, 10k, and 5k distances. Set amidst the scenic Pennsylvania woods, the course offers a challenging experience through rolling, rugged terrain, ideal for trail running enthusiasts...

The Spring SOMO Timed Trail Races take place at South Mountain Reservation in South Orange, New Jersey. This event features a looped trail course of 1.88 miles (just over 3K) that includes single track, pavement, and fire road sections. Runners can choose from multiple race options: 1 loop (3K), 2 l..