Trail Running calendar near Bronx County 2025-2026

The Caldwell Cougar Chase XC 5K & 8K is a cross-country running event held at Garret Mountain Reservation in Woodland Park, New Jersey. Scheduled for September 26, 2025, it features a women's 5K and a men's 8K race on a rolling course that includes trails, hills, gravel, dirt paths, grass sections,..

The Tunxis Trail Ultramarathon, held in Burlington, Connecticut, features challenging and technical trail races on the Tunxis Trail system, part of the Blue Blazed hiking trails. The event offers shorter distances this year, including an 8K (5 miles) and a 5K (3.1 miles), with staggered start times...

Water Gap 50k and Half takes place in Milford, Pennsylvania, within the Delaware Water Gap National Recreation Area. The event offers 50K and 25K distances, with the McDade Trail serving as the course—a 32-mile point-to-point route through the Gap, mixing rail-trail cinder paths with rolling singlet..

The Front Runners New York Cross Country 5K is scheduled for September 27, 2025, at Van Cortlandt Park in the Bronx. The meet is the 22nd annual running of this cross-country 5K and is supported by the Tom Cook Fund. Participants meet at the Tortoise & Hare Sculpture, where a FRNY volunteer wil..

The NJ Trail Series One Day is a multi-day ultrarunning event held at the Sussex County Fairgrounds in Augusta, New Jersey. Scheduled from October 2 to 5, 2025, it features a variety of race options including 72, 48, 24, 12, and 6-hour timed races, as well as marathons and 50K distances. The course..

The IronHike Endurance Series takes place in Cornwall, Connecticut, at Mohawk Mountain Ski Area from October 2 to October 5, 2025. The series is organized by IronHike Endurance Productions LLC, a US military veteran-owned business. Events use a FlexRelay format that allows solo entries or teams: In..

Trails4Tails is a dog-friendly trail running event held at Historic Washington Crossing Park in Titusville, NJ, with the start area at the Phillips Farm Recreation area off Bear Tavern Road. It offers three distances: a 1 Mile Fun Run (with or without a dog), a 5K, and a 5K with Dog. The course is a..

Chasing Ciara's Light 5K/12K Trail Race 2025, held at Great Hollow Lake in Monroe, CT, offers timed 5K and 12K trail races along a scenic course. Sanctioned by USATF and spectator-friendly, it features multiple spots for cheering. A Kids Fun Run provides additional family-friendly activity.The cours..

Iron Hike’s Fall Double Kuwohi Trail Marathon Plus Relay is a weekend endurance event set at Mohawk Mountain Ski Area in Cornwall, Connecticut. The race covers 28+ miles with 13,685 feet of elevation and is designed to be completed within a 24-hour window. Participants have the flexibility to run, h..

The Run the Vineyards - Pindar Fall 5K and 8K is a scenic autumn race held at Pindar Vineyards in Peconic, NY, featuring courses through 300 acres of vineyard property. Participants can choose between a 5K and an 8K race, both on mostly flat, hard-packed dirt trails and short-cut grass, making the e..

The Fat Sass Switchback Challenge is a trail running event held in Millburn, New Jersey, at the South Mountain Reservation's Locust Grove Picnic Area. Scheduled for October 5, 2025, it features a challenging 1-mile loop course with 300 feet of elevation gain, including steep climbs and technical, ro..

Set in Montebello, New York, the KMT Fall Foliage Frenzy is a trail-running event featuring 3-hour and 6-hour timed races. Runners tackle a challenging 2.33-mile loop with about 660 feet of vertical gain, weaving through Kakiat Park against the backdrop of Harriman State Park and the Hudson Valley’s..

IBBC Trail Classic 5k and Kid's Trail Run presented by Peace, Love, Trails takes place in Irvington, New York, with the event centered around the Irvington Woods trail system near 40 N Broadway. The lineup includes a 5k Trail Run/Walk through scenic woodland paths and a 0.6-mile Kid's Trail Run for..

Tesla Hertz Run is an ultrarunning event in Rocky Point, New York, offering multiple distances on a single Long Island course: 150‑mile, 100‑mile, 100K, 50‑mile, 50K, a 10‑mile, and a night-time 10‑mile option. The course features a scenic 10.48‑mile loop through pine barren terrain, with two aid st..

Forbidden Forest 30 Hour Ultra Run takes place in Roosevelt Forest, Stratford, Connecticut, October 11-12, 2025. Runners choose a personal challenge on a 2.23-mile loop that weaves through roots, rocky terrain, and a standout hill dubbed "OMG." Competitors can tackle 26.2M, 50K, 50M, 100K, 100 Miles..

Gemstone Sparkle Sprint 5k is a community trail run in Wilton, Connecticut, on Gemstone Farm (144 Huckleberry Hill Rd). The second annual event offers a scenic 5k trail course suitable for all abilities (strollers not allowed on the course) with a festive sparkly theme inviting participants to dress..

The Hainesport Endurance Run takes place at Hainesport Township Municipal Park in Hainesport, New Jersey on October 11 and October 12, 2025. The event is sanctioned by USA Track & Field. Ten percent of every entry fee is donated to Hainesport Township. Packet pickup occurs on race morning. Elec..

NSRF Great Pumpkin Dash Trail 5K is a Halloween-themed run/walk held at Blydenburgh Park in Smithtown, New York. The scenic, shaded course weaves through dirt roads and hard-packed trails with a few sandy spots, offering a non-technical trail experience suitable for first-time runners; strollers and..

The Paine to Pain Trail Half-marathon is scheduled for Sunday, October 12, 2025, in New Rochelle, Westchester County, New York. The race is organized by NewRo Runners and is part of the Trail Mix Series, a group of seven trail races in Westchester County, NY and Fairfield County, CT. The event uses..

The Mohawk Mountain Race takes place on Sunday, October 12, 2025, at Mohawk Mountain Ski Resort in Cornwall, CT (46 Great Hollow Road). Distances offered: Marathon Half Marathon 10K 5K Registration closes October 11. The event does not issue refunds or allow transfers of registrations or bibs. Hi..