Trail Running calendar near Williamstown 2025-2026

The Naked Bavarian is an affordable ultra trail running event held at Blue Marsh Lake in Leesport, PA. Participants can choose between 20-mile and 40-mile courses, focusing on the essence of trail running without the frills of traditional races, such as expensive swag and entertainment. The event em..

The Looney Leprechaun Trail Races, taking place on March 1, 2025, in Newtown, PA, features a 10K Trail Race and a Half Marathon, both set in the scenic trails of Tyler State Park. This annual event, now in its 13th year, is designed for trail runners and includes age group awards and a participant T..

The Rancocas Valley Cross Country 5K Run/Walk is set to take place at the RVRHS Sports Complex in Eastampton Township, NJ. This inaugural event welcomes participants of all ages and aims to support the RVRHS Cross Country Team for the upcoming 2025 season. Participants will receive a complimentary t..

The Big Woods Half Marathon is set to take place in Elverson, Pennsylvania, on March 15, 2025. This challenging race features a course with over 2,000 feet of elevation gain, navigating some of the toughest trails in French Creek State Park. Participants can expect a technical and rocky terrain, off..

The Shamrock Shenanigans is an exciting running event taking place in Douglassville, PA, featuring various ultra-distance challenges. Participants can choose from 5-hour and 10-hour races, as well as options without swag. The course consists of loops around a packed gravel trail, each approximately..

The HAT Run 50K is an exciting trail running event taking place in Havre de Grace, MD. Scheduled for March 22, 2025, this challenging race features a course that combines single-track trails, open fields, dirt roads, and some paved sections, with a total elevation gain of nearly 4,400 feet. Particip..

The 16th Annual Chimney Rock 5-ish Miles Trail Race, organized by the Raritan Valley Road Runners, takes place at Chimney Rock Park in Martinsville, NJ. This challenging trail race features a single-track course that includes various terrains such as rocks, roots, hills, and stream crossings, making..

The Montchanin Trails 5K is an exciting trail running event scheduled for March 30, 2025, in Wilmington, Delaware. This race features a scenic course that includes single track trails, gravel roads, and some hills, making it a unique challenge for participants. The event is limited to 300 runners, e..

Ultra Trail DE is an exciting 10-hour trail running event set in Wilmington, Delaware, featuring a challenging ~6-mile loop with approximately 700 feet of elevation gain per lap. Participants can choose to run for a specific distance or continue for the entire duration. The course, located on privat..

The Institute Woods 6K is a cross-country running event held in Princeton, NJ, featuring a scenic course on maintained trails without pavement or traffic. The event welcomes both runners and walkers, with a participant limit of 200. A portion of the proceeds supports local high school sports teams...

The Camp Innabah Challenge Trail 5K is an annual running and hiking event held at one of Pennsylvania's oldest summer camps. Participants can choose between a 5K run or a 5K hike, traversing scenic dirt trails, gravel roads, and paved sections in Chester County. The event features a pancake and baco..

The Philadelphia Trail Marathon, set in the scenic Wissahickon Valley Park, offers runners a unique opportunity to experience over 50 miles of beautiful trails. Participants can choose between a full marathon (26.2 miles) and a half marathon (13.1 miles), both designed to celebrate the natural beaut..

The Great Marsh Mud Mosey is an exciting running event taking place in Elverson, PA, featuring a 5K run and a 1-mile mud walk. Set in a unique private property, the course offers a scenic experience through marsh ponds, wooded areas, and grassy fields. Proceeds from the event will benefit the Great..

The Schuylkill River 50k Relay & Ultra Marathon is a trail-based running event taking place in Mont Clare, PA. Participants can choose from various formats, including a solo 50k run, a 3-person relay, or a 6-person relay. The course features a flat, paved trail that extends to Conshohocken and back,..

The 6th Annual Earth Day Trail Run, scheduled for April 26, 2025, in Huntingdon Valley, PA, features a variety of events including 5K and 10K trail runs, as well as a 1-mile walk for both members and non-members. The scenic course, set in the Pennypack Ecological Restoration Trust, is designed for p..

The Trails To the Sky 50k/10k is an exciting trail running event scheduled for May 3, 2025, at Voorhees State Park in Glen Gardner, NJ. Participants can choose between a 50k or a 10k course, featuring scenic trails with significant elevation gains of approximately 4500ft for the 50k and 900ft for th..

The Green Traill 5K is an annual running event taking place in Easton, Pennsylvania, on May 4, 2025. This event features a 5K run, a 2-mile untimed walk, and a Kids Fun Run, making it suitable for participants of all ages. The race is held at Easton Cemetery, promoting community engagement and suppo..

The Dirty German Endurance Fest is an urban ultramarathon held in Philadelphia's Pennypack Park, featuring a scenic course along Pennypack Creek. The event offers three race distances: 25K, 50K, and 50 miles, attracting over 600 runners each year. The course is designed to be accessible for trail ru..

The Dawn To Dusk To Dawn Track Ultras is an exciting running event taking place in Sharon Hill, Pennsylvania. Scheduled for May 10-11, 2025, the event features multiple race options, including a 24-Hour Run, a 12-Hour Run, a 50K Run, and a Virtual 50K Run. Participants can also contribute through do..

The Race4Warriors Half Marathon is part of a multi-event challenge taking place in Lewes, Delaware, on May 10, 2025. This event includes a 5K, 10K, and Half Marathon, with options for running, race walking, and a heavy march challenge. The race aims to support Wounded Warriors and homeless veterans,..