Trail Running Calendar Connecticut 2025-2026

We have found 29 Trailruns in Connecticut. Check below where and when you can find the races.

Forgotten Forest 9-Hour Ultra : May 16, 2026 The Forgotten Forest 9-Hour Ultra takes place at Roosevelt Forest in Stratford, CT (GPS address: 700 Peters Lane). The event is limited to 50 participants. Registration is final; there are no ref..

June 2026

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..

Enjoy the Nipmuck South Trail Race in Mansfield CT, a 15.7 mile out and back along the Fenton River that winds through woods, fields and over small bridges. Organized by Shenipsit Striders, proceeds benefit local trail stewardship.

Event overview The Centurion Ultra Trail Event takes place in Roosevelt Forest, Stratford, Connecticut on Saturday June 27, 2026. The main race challenges runners to complete 100 miles within a 33-hour limit. The field is limited to 50 part..

August 2026

Join the Stonington Cross Country 5K in Pawcatuck CT on Wednesday August 12 2026 for a free community race that blends one track loop, quiet campus roads and scenic trails. A children's 1/2 mile for ages 10 and under also finishes on the sc..

September 2026

Tackle a scenic 5K through Oswegatchie Hills Nature Preserve, winding past Clark Pond on root and rock strewn trails; hikers welcome. This fourth annual run benefits preserve maintenance and finishes with local pub awards and camaraderie.

Hit the newly restored Moosup Valley State Park Trail on Sunday, September 27 for scenic 5K, 10K and a kids fun run on all trail terrain. Post race food and gear, leashed dogs welcome, and proceeds support the Rotary Club of Plainfield.

October 2026

Take on the Iron Hike Fall Olympus Mons Ultra Trail Marathon Relay in Cornwall Connecticut, a team endurance challenge across Mohawk Mountain covering 152 plus miles with massive elevation gain. Run, hike or walk the course within an 84 hou..

November 2026

Run a scenic 13.1 mile trail half in Roosevelt Forest with eight laps on a marked loop, aid on every lap, awards and costume prizes, plus a book drive for local kids. All get a medallion and Athletic Brewing non alcoholic beer.