Trail Running Calendar Connecticut 2025-2026

Run scenic, hilly single track at the Tarrywile Half Marathon on November 16, 2025 in Danbury CT with 10K, half marathon and marathon options. Rugged terrain, aid stations and finisher medals make for a rewarding trail day.

Take on the Fall Fling 400 at YMCA Camp Sloper in Southington CT on Nov 22, 2025. Choose a unique 400 minute loop endurance challenge or a 4 mile two lap trail race through wooded single track and rolling hills.

Hit the Brooksvale Trails Turkey Trot at Brooksvale Park in Hamden for scenic 5K and 10K trail runs that are friendly to runners and walkers. Enjoy swag and maple bacon donuts while supporting park trails and a local food drive.

Tackle a rolling 8K through the West Hartford Reservoir at the Hartford Track Club 8K Cross Country Challenge on Nov 23, 2025. Enjoy trails, gravel and scenic views as runners vie for age group honors in a fast, fun fall race.

Join the Roxbury Thanksgiving Charity Race, a scenic 5K in Roxbury, Connecticut, starting and finishing at Everett B. Hurlburt Community Park. Run or walk to celebrate the season and support local causes.

Run or walk this Thanksgiving on a scenic 5k trail around Scoville Reservoir in Wolcott with medals, swag and timed results. Enjoy pre race stretching and free post race yoga, family and dog friendly, with proceeds supporting EndoFound.

Join the Darien Depot Overstuffed Turkey Trot at Darien High School on Nov 28 for 5K, 1 mile and kids races on scenic cross country trails, with medals for all finishers. Proceeds support The Depot youth center and post race music and food.

Run the Tower Tag Challenge at Sleeping Giant State Park on Dec 6 and see how many roughly 3.3 mile laps you can climb to the Observation Tower in timed 4 hour or 8 hour formats. Enjoy scenic views, a stiff climb and proceeds that help the..

Run the Frosty Forest 5K in Stratford through Roosevelt Forest on an off road trail welcoming runners, joggers and walkers. Holiday costumes encouraged, every finisher gets a commemorative item and proceeds support local charities.

Join the 8th Annual Taco Trials in Rocky Hill: eat a taco then run a 1 mile loop, repeating it ten times for a fun, quirky challenge. Medals for finishers and proceeds benefit the Connecticut Forest and Park Association.

Run a scenic 16 miles on the Nipmuck Trail in Union Connecticut, out and back to the Boston Hollow turnaround through Yale Myers Forest. Field is capped at 100 and proceeds benefit local trail groups.

Take on rugged singletrack, a steep headwall scramble and 3,000 feet of climbing at Sleeping Giant Trail Runs, with 25K and 50K options. At Sleeping Giant State Park in Hamden CT on March 29, proceeds benefit the park and finishers get meda..

Run Across CT 123 is a point to point ultramarathon across about 123 miles of Connecticut, weaving trails and backroads through 25 towns. Choose 100K or 200K solo or relay and chase a coveted belt buckle for 200K finishers.

Run a scenic 6.55 mile quarter marathon through West Hartford Reservoir 4 as two loops around the park. Limited to 150 runners, the event features chip timing, post race treats and awards in five year age groups.

Challenge yourself at Penwood State Park in Bloomfield on April 18, 2026 with 17K and 50K loop options. Expect rugged, rocky single track, a notable power line climb, and classic grassroots trail race vibes.

Run scenic trails around Lake Mohegan in a women and nonbinary friendly event offering 5K, 10K, and a 4 hour loop challenge. Enjoy supportive vibes, post race snacks, and finisher medals.

Run the 52nd Jack Bristol Lake Waramaug Ultra in Kent CT on April 26 2026 for scenic, mostly flat loops around the lake with 100K, 50 Miler and 50K options. Expect stocked aid stations, finisher swag and lakeside views to inspire.

Blue 2 Blue Challenge is a demanding 50K on May 3, 2026 in New Haven, Connecticut, across rugged blue blazed trails with steep, technical climbs. Entry is by waitlist and requires a recent qualifying trail 50K, so come prepared.

Run a scenic half marathon in late May starting and finishing at Mine Hill Distillery in Roxbury. The rolling course on pavement and dirt features steady climbs and fun downhills, and the event is cupless so bring your own bottle.

Challenge yourself at Mohawk Mountain in early June 2026 with timed endurance events from 12 hour to 84 hour and distances up to 152 miles. Race solo or with Trail Buddy or Trail Family teams, tackle night sections and enjoy base support an..