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Trail Running Calendar near Middlefield 2026-2027

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Explore the top trail runs near Middlefield for 2026-2027! We've gathered 22 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

October 2026
Trail races at Great Hollow Lake on October 3, 2026 including timed 5K and 12K, a Kids Fun Run and virtual options on a mostly shaded course.
A 3.5 mile trail run and walk on the scenic, flat Mill Pond Trail at Woodtick Recreation in Wolcott CT on October 17, 2026. Tiered online registration is available and a post-event meal is included with registration.
A 5K road and trail race and a 2 mile walk in Ivoryton to benefit the Ivoryton Library, with a costume prize and t-shirts for early registrants.
A community 5K in Bolton, CT on 10/17/2026 along the Hop River rails to trails, with a $30 entry donated to Project Purple to support pancreatic cancer awareness.
Trail 5K and a kids one mile fun race on a 33 acre campus in Middlefield CT with breakfast treats and finisher medals.
An off‑road 50k through southern Connecticut woodlands from Guilford Lakes School, featuring rocky single track and forest roads with a 10 hour cutoff.
November 2026
A 10 km rolling loop on technical single track in Penwood State Park, organized by CT Trailmixers, with no aid stations and proceeds partly to NAMI.
A fundraising 5K at Riverside Park supporting Riverfront Recapture's Community Rowing Program with running, rowing, and erg events.
A 100 percent cross country 5K at White Memorial Foundation & Conservation Center in Litchfield with natural trail footing, a midcourse hill, on-site outhouses, and Sawmill Field parking.
Trail races at YMCA Camp Sloper in Southington CT with a 400 minute timed loop event and a four mile two lap race organized by CT Trailmixers.
An accurately measured 8K cross-country race at the MDC Reservoir Complex in West Hartford with gravel, trails and fields and USATF sanction pending.
Inaugural Stride for the Knights 5K on November 22, 2026 at Southington High School features a wooded cross country course and a kids fun run.
Trail 5k and 10K in Hamden CT on November 22, 2026 with varied trail terrain, event swag, and a food drive for the Hamden Food Bank.
A Thanksgiving trail event at Scoville Reservoir with a 3.5 mile run or walk, chip timing, post-race yoga, swag, and proceeds supporting the Endometriosis Foundation of America.
Off-road 5 km and 5 mile run plus a 5 km ruck in South Glastonbury on November 28, with a kids fun run and a post-event chili, s'mores and brewery beverages.
December 2026
Test your endurance at Sleeping Giant State Park by completing as many 3.3 mile loops as possible in 4 or 8 hours on the scenic Tower Trail.
An eight hour looped run at Lake Wintergreen in Hamden CT with 1.6 mile laps, one aid station, provided food and a 50 runner limit; proceeds benefit Doctors Without Borders.
April 2027
Trail races on a 25K loop at Sleeping Giant State Park featuring technical singletrack, steep rock scrambles, and an optional second loop for the 50K.
Trail loop races at Penwood State Park in Bloomfield CT offering 17K and 50K on rocky single-track and double-track, organized by the CT Trailmixers.
Trail races at Deer Lake Outdoor Center in Killingworth CT with an approx 5 mile course, about 500 ft of elevation gain, and a timed 1 mile kids run.
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