Trail Running calendar near Bronx County 2025-2026

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 also choose a 5k distance or a virtual race option.Runn..

The Tower Tag Challenge is a trail running event held at Sleeping Giant State Park in Hamden, Connecticut, known for its scenic views and historic Observation Tower. Participants run repeated loops of the Tower Trail, a 3.3 to 3.4-mile out-and-back course that ascends over 600 feet along a smooth ca..

The PPTC Endurance Fest is an ultramarathon event held in Brooklyn, NY, featuring 50-mile and 50-kilometer race options. Taking place in Prospect Park, the course consists of multiple 3.33-mile loops—9 loops for the 30-mile race and 15 loops for the 50-mile race—starting and finishing near the Linco..

The Frosty Forest 5K is a trail running event held in Roosevelt Forest, Stratford, Connecticut. This 5K race offers participants a chance to escape the roads and enjoy a scenic course through nature. Runners, joggers, hikers, and walkers are all welcome, with a requirement of some trail experience.P..

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 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 & 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 complete a flat, scenic 1.6-mile "lollipop" loop around Scarlet Oak Pond twice to finish the 5K. The course features mostly wide gravel and dirt trails wit..

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 Mt. Tammany 10 is a challenging ultramarathon held in Delaware Water Gap, New Jersey, featuring an almost 40-mile course with over 10,000 feet of elevation gain. The race consists of 10 grueling loops, each involving a climb to the summit of Mt.Tammany via the Red-Dot trail, followed by a descen..

The Terror of Tammany is a challenging trail running event held at Worthington State Park in Columbia, New Jersey. 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..

The Sleeping Giant Trail Runs, held at Sleeping Giant State Park in Hamden, Connecticut, is a challenging trail running event known as one of the toughest in the Northeast. The race offers two distances: a 25K loop with over 3,000 feet of vertical gain and a 50K option for runners who complete two l..

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..

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 a unique rucking division with lightweight (15 lbs) and heavyweight (30 lbs) categories, the course offers rugged, technical trails w..

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 John Jay Community Trail Race, held in Cross River, NY, is a competitive 5k run on the newly developed John Jay Community Cross Country Trail. The course begins on the lower fields of the John Jay Campus, quickly entering challenging, hilly wooded trails near the middle and high schools, and fin..

The Wawayanda Trail Fest is a challenging trail running event held in Vernon Township, New Jersey, at Wawayanda State Park. It features multiple distances including a 100K, 50 Mile, 50K, and Half Marathon, all running on a scenic 26+ mile loop course with rhododendron tunnels, marsh bridges, gravel..