Trail Running calendar near Williamstown 2025-2026

The MCW Westfield Ultra is an annual endurance running event held at Tamaques Park in Westfield, New Jersey. Participants can choose from 3, 6, 9, 12, or 24-hour race durations, aiming to complete as many laps as possible on a 0.8-mile loop featuring both pavement and gravel surfaces. The race suppo..

The RunPA Trail Jamboree is a family-friendly trail running event held at Camp Mack in Newmanstown, Pennsylvania. It features multiple races including a Camp Mack Hustle Trail Race and endurance runs of 3, 6, and 12 hours on a 3.4-mile loop course combining single and double track, roots, rocks, gra..

Loopy Looper is an ultra running event held at Cooper River Park in Pennsauken Township, New Jersey, featuring a fast, flat 3.75-mile paved loop with scenic views of the Philadelphia skyline and river. The race offers multiple distances including 12-hour, 24-hour, and a 101.25-mile ultra, as well as..

The Summer Sundown Rundown at Kempton, held in Kempton, PA, is a unique trail circuit running event where participants race against the clock. The course is approximately 1.6 miles per lap, with runners completing as many laps as possible until time runs out, potentially covering over 35 miles. Each..

The JMC Running Co: 5-Hour Relay & Solo-Ultra Challenge is an annual event held in Phoenixville, Pennsylvania, at Charlestown Park. Participants can choose between two events: a 5-person relay or a solo ultra challenge. The relay teams of five runners each complete repeated loops of approximately 2...

The Route of Healthy Living 5k & BBQ Bash is a community-focused event held at Pleasant Valley Park in Basking Ridge, NJ. Celebrating its 5-year anniversary, the event features a 5K run/walk and a 1-mile health walk, welcoming participants of all fitness levels. The cross-country course includes a m..

The USATF-NJ Open & Masters 5k Cross Country Championships is a competitive running event held at Natirar Park in Peapack Gladstone, New Jersey. Scheduled for August 24, 2025, this 5-kilometer cross country race features divisions for both open and masters athletes. It is part of the Paul Miller Aut..

The 8th Annual Run for Thorncroft is a community-focused event held at the Thorncroft Equestrian Center on its scenic 70-acre property in Malvern, PA. Featuring a 5K Trail Run, a 5K Walk, and a One-Mile Move-As-You-Please event, it welcomes participants of all abilities, including leashed dogs. The..

The Barn-B-Q Trail Festival, held in Berkeley Heights, NJ, is a unique outdoor event combining trail running, hiking, and a lively barn party. Set in the historic Deserted Village of Feltville within Watchung Reservation, participants can enjoy self-guided trail tours ranging from 2 to 6 miles, with..

The Run the Vineyards - William Heritage Labor Day 5K is held at William Heritage Winery in Mullica Hill, NJ. This event features a scenic 5K trail run primarily on manicured vineyard trails with rolling hills, welcoming all ages and walkers. Additional options include a 1 Mile Kids Race for ages 14..

The Mountain Lakes Trail Run & Walk in Princeton, NJ, is a scenic event held at the Billy Johnson Mountain Lakes Nature Preserve, benefiting the Friends of Princeton Open Space. The event features a 5K+ trail run and a 3K walk, with the run course consisting of about 10% paved trails, 30% unimproved..

The Run the Vineyards - White Horse 10K/5K is an annual running event held at White Horse Winery in Hammonton, New Jersey. Featuring both 10K and 5K races along with a 1-mile walk, the event offers a flat, scenic course through vineyards and country roads. Participants enjoy chip timing with instant..

The Cancer Warriors 5k is an annual fundraising event held in Baltimore, MD, with the 9th edition scheduled for September 20, 2025. The race takes place on the scenic Ma & Pa Trail in Belair, featuring a straightforward out-and-back course that crosses streams and passes under Route 24, ending near..

Ultra Trail DE is a trail running event held in Wilmington, Delaware, on private scenic trails at 2900 Montchanin Road. The race features a challenging 6-hour format on a roughly 5-mile loop with about 700 feet of elevation gain per lap. The course offers a mix of creek crossings, singletrack, rolli..

Cedar Run's Trails, Tails & Ales is an annual 5K charity trail run held at Woodford Cedar Run Wildlife Refuge in Medford, New Jersey. The event features a scenic, exclusive trail course starting and ending at the Nature Center Pavilion. Participants receive a limited edition event t-shirt, light bit..

The Conestoga Trail Run - 10 Tough Miles is a challenging and scenic trail race held annually in Holtwood, Pennsylvania. Known as the original and oldest trail run on the Conestoga, this 10-mile course features rugged, rocky terrain with steep hills, multiple small stream crossings, and beautiful vi..

The Bear Trail Half Marathon & 10K is a trail running event held at Lums Pond State Park in Bear, Delaware. The race features two distances: a half marathon (13.1 miles) consisting of two loops, and a 10K (6.55 miles) with one loop. The course utilizes portions of the Little Jersey and Swamp Forest..

Blackout in Emmaus, PA, is a rugged nighttime trail running event hosted by The Running Kind. The main race is a challenging 10K course on South Mountain, featuring over 1000 feet of vertical gain through technical, mountainous terrain. Participants can choose to run the "Lights On" edition starting..

Run-a-Muck is an annual 5K running and walking event held in the scenic Willistown countryside, supporting local land preservation efforts. Participants can choose to run the 5K or "muck" the cross-country trail, which features diverse terrain, encouraging appropriate attire. The event offers a fest..

Trails4Tails is a running event held at Historic Washington Crossing Park in Titusville, New Jersey. The event features a 1 Mile Fun Run (with or without a dog), a 5K run, and a 5K run with a dog, all on wooded trails rather than paved paths, encouraging participants to properly train with their dog..