Trail Running Calendar Connecticut 2025-2026

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 is a rugged trail running event at Macedonia Brook State Park in Kent, CT, hosted by Steep Endurance. Now in its seventh year, it offers 12K, 25K and 50K distances on lush forest single-track with grinding climbs, technical descents, and several views. The 25K doubles the 12..

Winding Trails TRAIL RUNNING Series #3 is a Tuesday-night trail race series held at Winding Trails in Farmington, Connecticut. The 2025 edition runs five races from late August through late September, with participants choosing either a 5K or a 10K distance. Runners cover a roughly 3-mile loop on tr..

PCS Harvest Hustle 5K & Kids Run is a fundraising event at Pomfret Rec Park in Pomfret Center, CT, benefiting the Pomfret Community School PTO. It offers a Kids Fun Run and a trail 5K. The 5K winds through the Pomfret Forest on a technical, single-track wooded trail—rocky with roots and ups and down..

Run for the Hills is the 4th Annual 5K trail run/walk held at the Oswegatchie Hills Nature Preserve in Niantic, CT. The route winds along hiking trails around the preserve’s perimeter, including a scenic stretch by Clark Pond, with exposed rocks and roots to challenge runners and walkers alike. Proc..

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..

Where the Pavement Ends Single & Double Loop is a Ridgefield, Connecticut trail race that starts and finishes at Lake Windwing ballfields. The event offers two courses: a 4.25-mile Single Loop and an approximately 8-mile Double Loop. Runners traverse Hemlock Hills and Pine Mountain Open Space, with..

Winding Trails TRAIL RUNNING Series #4 is a five-race Tuesday-night trail series in Farmington, CT. Race #4 runs from Aug 26 to Sep 23, 2025, offering 5K or 10K options on a roughly 3-mile loop. Check-in and a rolling start take place at Winding Trails, 50 Winding Trails Drive.Registration is availa..

Angevine Farm Half Marathon is part of the Angevine Farm Trail Festival in Warren, CT, hosted by Steep Endurance. The event offers a Half Marathon plus an 8-Hour option and a 5K/5K Canicross, all on scenic farm and forest trails. The Half Marathon begins at Angevine Farm, runs a 1.7-mile farm loop,..

The Cockaponsett Trails to a Cure is a trail running event held in Chester, Connecticut, within the Cockaponsett State Forest. Participants can choose between a 4-mile or a 9-mile race, with the shorter distance covering the first part of the longer course. The trail features natural terrain includi..

Winding Trails TRAIL RUNNING Series #5 is a Tuesday night event at Winding Trails in Farmington, Connecticut. The 2025 edition runs five races from August 26 through September 23, with a choice of 5K or 10K on an approximately 3-mile loop. Check-in and rolling start occur in the early evening at 50..

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..

IronHike Endurance Series brings a mountain-style challenge to Mohawk Mountain Ski Area in Cornwall, Connecticut. The Fall 2025 edition runs across October 2–5 and offers six self-paced events ranging from 12 to 84 hours. Core distances include Olympus Mons Ultra (152+ miles, about 72,590 ft of elev..

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 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..

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..

CT Donut Run is a 31.5-mile charity group run in Connecticut, presented as a long, donut-filled endurance experience rather than a traditional race. The route centers in West Hartford and visits several donut stops, including locations in Newington, Berlin, Wallingford, and North Haven, finishing in..

NipMuck Trail Marathon, in Ashford, CT, features two options: the original NipMuck Trail Marathon (26.4 miles) and a two-person NipMuck Relay. The race uses a 13-mile middle segment of the Nipmuck Trail, running south to Route 44, back to the start, then north to Boston Hollow before finishing at Pe..

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..