Trail Running calendar near Suffield 2025-2026

Seth’s Fat Ass 50K at Forest Park in Springfield on December 20 invites runners to tackle between one 5K loop and the full ten loop 50K in a festive, low key winter setting. Enjoy scenic roads and trails, event swag and a seven hour limit.

Join a friendly, informal 5 to 10k run or snowshoe on a roughly 10k course with loaner snowshoes available. Bring a spare pair to share, enjoy light refreshments, and team up for bragging rights and a shared baked treat.

Tackle the TARCtic Frozen Yeti at Hale Education in Westwood MA on Feb 7 and 8 2026 with a 30 hour challenge or a 15 mile looped race. Expect well marked winter trails, regular aid and proceeds supporting land conservation.

Join the Frozen Heart 900, a free grassroots winter loop in Rockfall CT where runners take on a 15 hour challenge around a 2.2 mile trail loop. Self supported format with a heated meeting room for warming, so bring headlamps and carpool.

Enjoy a scenic 5K around Osprey's Dominion Vineyards in Peconic, NY on a two lap cross country style course for runners and walkers. Finishers get a shirt, bottle stopper medal, shatterproof wine glass and a wine pour.

Run scenic singletrack loops around ponds and woodlands at Hale Education in Westwood, with a 6 hour endurance option or a 3.5 mile loop. Bring your own bottle for this cupless event and enjoy a laid back aid station at the start.

Test your trail skills on the Northern Nipmuck Trail Race, a rugged 16 mile out and back through Yale Myers Forest and Boston Hollow with technical terrain and serious climbing. Limited to 100 entrants, proceeds support local trails.

Tackle rugged singletrack and steep rock scrambles at the Sleeping Giant Trail Runs in Hamden CT on March 29, 2026. Choose a challenging 25K loop or a double 50K and enjoy aid stations, medals and post race food and drinks.

Join CT123 on April 4, 2026, a point to point 123 mile ultramarathon across Connecticut that blends trails and backroads for a challenging spring adventure. Solo and relay entries welcome and 200K finishers earn a commemorative belt buckle.

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.

Join the John Jay Community Trail Race in Cross River NY on Sunday April 12, 2026 for a family friendly outing with a 5k, 4k Jay Walk and a 200 meter Kids Dash. Race on scenic wooded, hilly school trails and finish at the track.

Tackle wooded trails at the Farm & Forest All Terrain 5K and Hog Wild Kids Fun Run in Stamford, CT on April 12, 2026. Family friendly and community focused, this race raises funds for the Stamford Museum and Nature Center.

Take on rugged Traprock at Penwood State Park in Bloomfield CT on April 18, 2026 with 17K one loop or 50K three loop options. Expect rolling, technical single track and rocky trails; bring your own cup for this cupless, chip timed race.

Celebrate spring at the Brooklyn Cider House Spiked Apple 5K on April 19 in New Paltz, a scenic two lap run through vineyards and orchards. Enjoy a cider pour, fresh donut, finisher medal and commemorative shirt.

Run the TARC Spring Classic at Jericho Town Forest on April 26, 2025, choosing distances from 10K to 50K plus a free youth fun run. Enjoy a smooth, relatively flat looped trail with one aid station offering vegan friendly options.

Join the Lake Mohegan Women’s Trail Race at Lake Mohegan in Fairfield CT for 5K, 10K or a 4 hour loop challenge open to women and non binary runners. Enjoy scenic trails, finisher medals, post race snacks and a welcoming community vibe.

Run the 52nd Jack Bristol Lake Waramaug Ultra Races on April 26, 2026 in Kent CT with 100K, 50 mile and 50K options around scenic Lake Waramaug. Flat rolling loops, four aid stations and finisher swag make this a rewarding spring ultra.

Enjoy a spring 10k trail race in Cross River, NY on April 26, 2026, winding through scenic park trails. Entry is by lottery with registration opening January 2, 2026, perfect for trail runners seeking a well organized challenge.

Tackle the scenic Seven Sisters Trail Race in Amherst, MA on May 2, 2026, an out and back along the Holyoke Range ridgecrest. This rugged 12 mile course delivers steep climbs, rocky singletrack and over 3,500 ft of elevation for a thrilling..

Join A Run to Remember on May 2 in Red Hook and run or walk scenic farm trails through meadows, orchards, and woods at Greig Farm. Honor loved ones, celebrate community spirit, and vie for cash prizes in the 5K and 10K races.