TSR Trail Half Marathon

A dirt road 50k in Leyden, Massachusetts on May 16, 2026, with 4,200 feet of elevation change and a course that passes through forests, fields, and an 1870s covered bridge. Registration closes May 13 and there is no race-day entry.

A May race day on the Ashuwillticook Rail Trail offering a marathon, half, 8K and kids mile, with race shirts, finisher medals, aid stations, and proceeds supporting trail maintenance.

Trail running in Pittsfield State Park with 50K, 25K and a 5 mile course on single track and flowy forest trails. The event is organized by BURCS and benefits local animal rescue organizations.

A choose your own adventure ultra and trail event at Chesterfield Gorge with multiple distances, lap based 50k to 100mi options, a 30 hour window for ultras, and timed 33k and 11k races the following day.