Trail Running Calendar Connecticut 2025-2026

The "Run Like A Mother" 5K Trail Run, organized by the Franklin Elementary School PTO, is a family-friendly event taking place at Giddings Park in North Franklin, CT. This Mother's Day-themed race celebrates the incredible role of mothers and is open to participants of all ages, including a special..

The Spring Fling 600 is an annual trail running event hosted by the CT Trailmixers at YMCA Camp Sloper in Southington, Connecticut. The event features two main races: the 600-minute race where participants run as many loops as possible on a roughly three-mile trail course within 10 hours, and a 6-mi..

The Run Ragged Last Person Standing event, hosted by the CT Trailmixers, is an exciting endurance race set in the rugged terrain of Ragged Mountain, Berlin, CT. Participants will tackle a challenging 3.11-mile loop, with one hour to complete each lap. The race continues until only one runner remains..

The Soapstone Mountain Trail Races, held in Stafford Springs, Connecticut, offer two scenic trail running events: a challenging 25K (approximately 15.5 miles) and the Jerry Stage 6K "Sampler." Both courses wind through the beautiful Soapstone Mountain area within Shenipsit Forest State Park, featuri..

The 16th Annual Farmington River Run 5K Trail Race is scheduled for May 18, 2025, at Winding Trails in Farmington, Connecticut. This scenic race takes place on a designated 5K trail within a 300-acre area surrounding Walton Pond. Participants can compete for awards in various categories, including o..

The Mine Hill Half Marathon, held in Roxbury, Connecticut, is known as the toughest road half marathon in the state. Starting and finishing at the scenic Mine Hill Distillery, the challenging 13.1-mile course features a mix of paved and dirt roads with significant elevation changes, including a stee..

The IronHike Endurance Series - Spring 2025 takes place at Mohawk Mountain Ski Area in Cornwall, Connecticut. This multi-day event, held over four days in June, offers a unique blend of hiking, trail running, and camping challenges. Participants can compete solo, with a trail buddy, or as a trail fa..

The Flanders Field & Forest 5K is an annual trail run and walk held at Flanders’ Van Vleck Farm & Nature Sanctuary in Woodbury. Covering 3.1 miles of scenic trails, the event welcomes participants of all ages and fitness levels. It is officially timed and features divisions for different age groups,..

The Ansonia Six Hour Trail Run is a challenging endurance event held at the Ansonia Nature Center in Ansonia, Connecticut. Participants run counter-clockwise loops of approximately 1.9 miles on moderately technical singletrack trails featuring about 170 feet of elevation gain per loop. The course of..

The Norbrook Farm Brewery Trail Festival, held at Norbrook Farm Brewery in Colebrook, Connecticut, is a vibrant all-day event featuring trail running and mountain biking. Participants can choose from a 4-hour run, 10K, 5K, run/bike duathlon, and various mountain bike races on challenging 5-mile loop..

The Nipmuck South Trail Race is a 15.7-mile out-and-back trail run held at Mansfield Hollow State Park in Mansfield, Connecticut. The scenic course follows the Fenton River and features varied terrain including small bridge crossings, a climb to a 50-foot cliff, fields, and woods. Runners encounter..

The Summer Solstice Trail Run is an early morning trail running event held at Gay City State Park in Hebron, Connecticut. Scheduled for June 21, 2025, it offers three race distances: 3 miles, 5 miles, and 8 miles. The 8-mile race is part of the 2025 Blue-Blazed Trail Running Series and the USATF-CT..

The Brooksvale 12-Hour is an endurance running event held in Hamden, Connecticut, featuring a challenging 4.25-mile loop with 500 feet of elevation gain. Participants can choose to run distances ranging from a marathon (six loops) to a 50k (eight loops) or aim for 50 miles within the 12-hour time li..

The Centurion Ultra Trail Event is an endurance race held in Roosevelt Forest, Stratford, Connecticut, featuring two main race options: a 33-hour challenge to run as many miles as possible or to complete 100 miles within 33 hours. The course is a 2.5-mile loop through classic New England terrain, in..

The Rails-to-Trails 5K in East Hampton, Connecticut, is a point-to-point race starting at the Connecticut Draft Horse Rescue and finishing at the Old Home Days grounds. The scenic course begins on Chestnut Hill Road, crosses Route 16, and continues along the shaded Air Line Trail for about two miles..

The 7-11 Slurpee Day Ultra 60k is a unique, self-supported ultramarathon held in Vernon, Connecticut, covering approximately 37.5 miles along mostly road routes. Participants run between seven 7-11 convenience stores across towns including Vernon, Manchester, East Hartford, West Hartford, Newington,..

The Soapstone Assault is a challenging approximately 5-mile trail race held at Soapstone Mountain, featuring a unique course that requires participants to climb the mountain six times. This event is designed for those seeking a rigorous hill workout, as runners navigate steep, rocky, and potentially..

The People's Forest 7-Mile Trail Run is an annual trail running event held in Barkhamsted, Connecticut. This race covers a challenging 7-mile distance through scenic forest trails, offering runners a chance to experience natural beauty and rugged terrain. The event is part of the USATF/CT Mountain U..

The Stonington Cross Country 5K is a running event scheduled for August 13, 2025, in Pawcatuck, Connecticut. This event features a 5K race along with a Children's 1/2 Mile, catering to young participants aged 10 and under. The race begins on the track at Stonington High School, followed by a scenic..

The Macedonia Trail Race, held annually in Macedonia Brook State Park in Kent, Connecticut, offers trail runners a unique experience with its lush forest trails, challenging climbs and descents, and stunning viewpoints including Cobble Mountain, where runners can see the Catskill Mountains on clear..