Trail ultramarathons in Massachusetts, United States

Scenic 1.9-mile loop at Notchview with a 0.2-mile climb, rolling single and double track, open fields, and cross-country ski trails

10-mile singletrack loop through Noon Hill Reservation, diverse terrain and minimal road crossings, near Boston yet set in immersive woodlands

Jug End Loop Trail course with woods, fields, apple orchard, and 830 feet of elevation change per 4.2-mile lap; moderately challenging terrain

Mostly flat 50K and 50-mile courses on scenic New England trails at DCR Great Brook Farm State Park, featuring roots, rocks, and fall foliage.

Double-loop figure-eight 50K in Pittsfield State Forest, with substantial climbing, fast descents, Taconic Crest Trail, and sweeping vistas.

Scenic 1.9-mile groomed loop at Notchview with self-timed laps, access to aid station, and options for 50km, 50-mile, or 24-hour challenges

Looped 4.167-mile course through Needham town forest and Rail Trail, starting hourly from Claxton Field Quarry with no road crossings

Double-track trails through tranquil woodlands and past military bunkers, hard-packed earth and gravel, gentle rolling hills, and moderate elevation gain.

Repeated out-and-back laps on the WWII Veterans Memorial Trail, mixing pavement, gravel and grass with a weight-carry strategy format.

Inaugural fall ultramarathon on the trails of White Barn Farm, supporting conservation of farm woods and local trails

Double and single track routes through Willowdale State Forest, rugged varied terrain, part of the North Shore Trail Series

Hourly 4.1666-mile loop in Winchendon, backyard ultra format, relaxed camping and communal atmosphere with aid stations and bonfires

6-hour ultramarathon on a 5K loop at Wright Locke Farm, featuring rocky terrain, rolling hills, and goats along the course

Rugged technical trails with roots, rocks, steep elevation changes, and intermittent Boston skyline views in classic New England woodland

Scenic 6.2-mile trail loop at Bradley Palmer State Park, repeatable up to five times, on beautiful park trails with a relaxed, non-competitive atmosphere.

Classic early-season New England trail ultra with deep regional roots and longstanding community tradition.

Three distinct five-mile color-coded loops through wooded trails with all starts and finishes at Powissett Lodge

New England dirt trails marking the return of spring, with fresh terrain after winter

Jeep trails and singletrack paths through Mt. Toby’s varied terrain, early-season race atmosphere