Trail Running calendar near Philadelphia 2025-2026

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

Naked Nick is a trail running event held in Leesport, Pennsylvania, featuring 25K and 50K distances around Blue Marsh Lake. The course is primarily single-track trails (80%) with some gravel roads (20%), forming a lollipop-shaped route with a 5.5-mile out-and-back and a 4.5-mile loop. The terrain is..

The Angela Ivory Memorial Runs is an annual trail running event held at Killens Pond State Park in Felton, Delaware. It features challenging distances including a 50K, 100-mile, and 24-hour race. The course consists of a roughly 3.1-mile mostly dirt loop within the park, with gentle terrain, minimal..

The Frosty Fat Sass is an annual trail running and hiking event held at South Mountain Reservation in West Orange, New Jersey. Scheduled for January 31, 2026, this 9th edition offers participants options to run or hike a 5K loop, or join timed 3-hour and 6-hour challenges, including a new rucking di..

The Mahlon Winter Donut Trail Run will take place in Lake Hopatcong on Sunday 8 February 2026. You can run between 5 and 13 miles.

The Febapple Frozen event is a trail running race held in South Mountain Reservation, Maplewood, New Jersey. Scheduled for February 21, 2026, it offers multiple distance options including a 50-mile, 50-kilometer, 20-mile, and 10-mile race. All distances are based on a roughly 10-mile loop course sta..

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..

Squatchapple is a popular trail running event held at South Mountain Reservation in West Orange, NJ, offering distances of 11 miles, 20 miles, 50K, and 50 miles. The race features a challenging course composed of three loops—4, 5.5, and 7 miles—with varied terrain including carriage roads, singletra..

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 single-track trails (80%) and some gravel roads (20%), with elevation gains of approximately 2..

The HAT Run 50K is a trail running event held in Havre de Grace, Maryland. The course primarily consists of single-track trails, open fields, dirt roads, and some paved sections, featuring nearly 4,400 feet of elevation gain. Runners start with a 3-mile loop followed by two 14-mile loops. A notable..

The Mt. Tammany 10 is a challenging ultramarathon held in Delaware Water Gap, NJ, featuring an almost 40-mile course with over 10,000 feet of elevation gain. Runners complete 10 grueling loops, each involving a climb to the summit of Mt.Tammany via the Red-Dot trail, a descent on the Blue-Blaze trai..

The Terror of Tammany is a challenging trail running event held at Worthington State Forest in Columbia, NJ. Featuring two distances, a 30K and a 50K+, the race consists of multiple loops of a 6.7-mile course with approximately 1,750 feet of vertical ascent per loop. The 30K covers three loops, cate..

The Morris County Empanada Trail Run, held in Morris Plains, NJ, offers both 5K and 10K run/walk events on scenic trails within Central Park of Morris County. The course features mixed terrain including dirt, grass, gravel, and some hills, providing a varied and enjoyable trail running experience. P..

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 Philadelphia Trail Marathon, held in Wissahickon Valley Park, Philadelphia, offers marathon (26.2 miles) and half marathon (13.1 miles) distances. The park, spanning over 2,000 acres with 50+ miles of trails, features natural beauty and historic sites, making it a favorite for local trail runner..

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..

The Matzah Miles 5k Trail Run and 1 Mile Family Walk is a festive event celebrating Passover, set to take place in Medford, NJ. Participants can choose between a competitive 5K trail run, a leisurely 1-mile family walk, or a fun 50-yard Kids Dash. The event features a pre-race warm-up, games for chi..

The Green Traill 5K is an annual running event held in Easton, Pennsylvania, specifically at the historic Easton Cemetery. Celebrating its 5th anniversary in 2026, the event features a 5K run, a walk, and a kids fun run for children aged 10 and under. This unique race is notable for being the Lehigh..

The Dirty German Endurance Fest is an urban ultramarathon held within Philadelphia's Pennypack Park, a scenic area featuring trails along Pennypack Creek with diverse surfaces including soft dirt, sandy spots, single track, gravel, and some paved bike trail. The event offers 25K, 50K, and 50-mile di..

The Blue Mountain Trail Run takes place at Blue Mountain Ski Area in Palmerton, Pennsylvania, offering a scenic 10K trail race. This event features pristine singletrack trails located outside the usual ski boundaries, providing a unique running experience inaccessible to obstacle course racers. Part..