Trail Running Calendar Connecticut 2025-2026

The Stonington Cross Country 5K is a free running event held at Stonington High School in Pawcatuck, Connecticut. The course begins with a loop on the school track, followed by a half-mile run on quiet, dead-end streets within the campus. Runners then transition to a mix of single- and double-track..

The Shenipsit Striders 50th Fatass is a celebratory running event held at Crandall's Park Pavilion in Tolland, Connecticut. Marking the club's 50th anniversary, the event features an 8-hour window where participants run multiple 5K loops on a trail course starting and finishing at the pavilion. Runn..

The Cross-Connecticut Run for Mental Health Awareness is a unique 56-mile group running event held annually in Connecticut, following the scenic and flat Farmington Canal Heritage Trail from West Suffield to New Haven. This non-competitive challenge supports Mental Health Connecticut through fundrai..

The Macedonia Trail Race, held in Macedonia Brook State Park in Kent, Connecticut, offers a unique trail running experience with lush singletrack trails, challenging climbs and descents, and stunning viewpoints including Cobble Mountain, where runners can see the Catskill Mountains on clear days. No..

The Storybook Half Marathon is a scenic 13.1-mile trail race held in Roosevelt Forest, Stratford, Connecticut. The course consists of eight loops on a 1.64-mile wooded trail featuring singletrack and doubletrack paths with roots, rocks, and gentle hills, offering a charming yet moderately challengin..

Run for the Hills is an annual 5K trail run and walk held at the Oswegatchie Hills Nature Preserve in Niantic, Connecticut. The event features a scenic course that runs by Clark Pond and around the perimeter of the preserve, offering participants beautiful coastal forest views across more than 450 a..

The PCS Harvest Hustle 5K & Kids Run is a community-focused event held at Pomfret Rec Park in Pomfret Center, Connecticut. It features a 5K trail run and a kids' fun run of half a mile, supporting the Pomfret Community School Parent Teacher Organization. The PTO uses funds raised to enhance educatio..

The Where the Pavement Ends Double Loop will take place in Ridgefield on Sunday 14 September 2025. You can run between 4 and 8 miles.

The Angevine Farm Trail Festival is a scenic trail running event held in Warren, Connecticut, in the picturesque Northwest corner of the state. The festival features multiple race options including an 8-hour endurance run, a half marathon, and 5K races with a Canicross option for runners with dogs...

The Cockaponsett Trails to a Cure will take place in Chester on Sunday 21 September 2025. You can run between 4 and 9 miles.

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...

The Moosup Valley 5K and 10K All Trail Race takes place in Moosup, Connecticut, on the newly restored Moosup Valley State Park Trail. This event features a 5K, a 10K, and a Kids Fun Run, all held on a 100% trail course that crosses only one dead-end road. The race starts and finishes at the Griswold..

The IronHike Endurance Series will take place in Cornwall from Thursday 2 October 2025 to Sunday 5 October 2025. You can run between 15 and 152 miles.

The CFA Trail 5K & Children's Fun Run for Mental Health is a timed trail running event held at Deans Mill Farm in Stonington, Connecticut. Participants can choose between a 5K trail run or a fun run for children aged six and under. The race takes place amid beautiful fall foliage, offering a scenic..

The Norfolk Land Trust Trail Race Series, including the Haystack Mountain Challenge, is held annually in Norfolk, Connecticut. The 12th edition features three trail race distances: a challenging 5K through Barbour Woods with scenic climbs and wetlands; a 10K that adds a tough loop summiting Haystack..

The NipMuck Trail Marathon, held in Ashford, Connecticut, is a challenging 26.4-mile trail race along the scenic Nipmuck Trail. The course features diverse terrain including rocks, roots, mud, and wood bridges, offering a true test of trail running skills. Runners start at Perry Hill Road and naviga..

The Forbidden Forest 30 Hour Ultra Run is an epic endurance event held in Stratford, Connecticut, offering runners up to 30 hours to complete distances ranging from a marathon (26.2 miles) to 100 miles or more. The course features a challenging 2.23-mile loop with roots, rocky terrain, and a notable..

The Gemstone Sparkle Sprint 5k is a community-focused trail running event held at Gemstone Farm in Wilton, Connecticut. Scheduled for October 11, 2025, this scenic 5k trail run welcomes participants of all abilities, encouraging runners and casual walkers alike to dress in sparkly attire and enjoy t..

The Mohawk Mountain Race, held at Mohawk Mountain Ski Area in Cornwall, Connecticut, offers a challenging trail running experience with marathon, half marathon, 10K, and 5K distances. The course features steep ascents and descents on ski mountain trails, including the Wildwood, Timber, Pine, Laurel,..

The Tom Centinaro Memorial "Dam" Race will take place in Waterbury on Saturday 18 October 2025. You can run 3 miles.