Trail Running calendar near Chelsea 2026-2027

We have found 109 Trailruns within 80 miles of Chelsea. See below where and when you can find the races.

Test your limits at the birthplace of Spartan Race in the Green Mountains of Vermont. Choose from distances ranging from 5km to 50km featuring steep climbs and rugged off trail descents at the iconic Killington Ski Resort.

Experience an unapologetically wild mountain crossing in the White Mountains of New Hampshire. Navigate rugged, unmarked ridgelines across 25K, 25 mile, or 50 mile distances in this remote wilderness challenge.

Experience a scenic run through wooded conservation trails finishing at the Hooksett Public Library. This community event features a 5K trail race and a half mile kids fun run to support local youth programs.

Experience the scenic Trail Around Middlebury with distances ranging from a 2 mile fun run to a full 19 mile loop. Enjoy single track trails and mountain views in this community event supporting Vermont footpaths.

A community 5K in Hillsborough, NH on September 20, 2026, organized by the Hillsboro Fire Department. The off-road course may be uneven and strollers are not recommended; registration runs March 25 to September 19 with a $30 fee.

A community-focused mountain running event in East Charleston, Vermont on September 26, 2026, crossing five peaks on mainly single-track trails. Timed full marathon and 20 mile trail only options are offered while proceeds support NorthWood..

Experience the inaugural Cirque Series at Jay Peak featuring a 7.1 mile course with over 3000 feet of vertical gain. Runners navigate technical terrain and rocky ridges to reach the summit for 360 degree views of the Vermont landscape.

Experience an endurance tradition at Mt. Ascutney featuring 50 mile and 50 km ultra runs, mountain bike races, and team relays. This scenic event supports Vermont Adaptive and includes fun races for kids.

Hit the Trail 2026 offers a timed 5K run/walk or bicycle rides on Vermont's scenic Lamoille Valley Rail Trail. The event raises funds for healthy aging services in Central Vermont. Join the community in Morrisville on September 27 for a day..

October 2026

Experience a rugged trail race through the Adirondack forests and wetlands of Amy’s Park. Enjoy scenic views and a community after party at a local brewery while supporting land conservation for Lake George.

A 50 kilometer mountain ultramarathon around Lake George with roughly 9,000 feet of climbing, multiple aid stations, and required prior ultra-trail experience; the route starts and finishes at Camp Chingachgook in Kattskill Bay.

Last person standing trail running on October 3, 2026 in Center Conway, New Hampshire. Runners repeat a roughly 3.5 mile loop with about 250 feet of climb per lap; camping and weekend meals are available.

Experience the seasonal scenery of New Hampshire at the Keene Family YMCA Fall Foliage Trail Race. Choose between a fast 5K or a 10K with elevation gain to support local community programs.

The Mile for Mentoring will take place in Gilford on Sunday 4 October 2026.

Devil's Den Ultra in Bradford, Vermont on Oct 10 to 11 2026 uses a 10K loop on Wrights Mountain and offers 30 hour, 12 hour and 10K options. Entries are capped at 100 and finishers receive tarot style awards.

Trail races at Trapp Family Lodge in Stowe, VT on Oct 17, 2026 include a half marathon and a full marathon that is two laps of a 13.1 mile loop with singletrack, dirt roads and steep climbs to Round Top Mountain.

The Cranmore Mountain Race is a classic two lap mountain run in New Hampshire. Runners tackle ski slopes and trails for a share of $7500 in prizes. This historic event is part of the USATF New England Mountain Circuit.

This Halloween-themed 5K trail run takes place on the Laura’s Tears trail at Arrowhead Golf Course. Awards are given to the top finishers, and costumes are encouraged. Refreshments and facilities are available.

Experience a timed mountain trek across the rugged ridges of Vermonts Northeast Kingdom. Choose from multiple loop distances and the option to carry weighted gear for an added challenge on the scenic trails of Burke Mountain.

Tackle a unique mountain course that goes up and down four times over 4.9 miles. The event offers prize money, age group awards, and benefits the Keene Community Kitchen. Early registration includes a t-shirt.