The South Taconic Trail is a 21.3 mi (34.3 km) hiking trail in the Taconic Mountains of southwest Massachusetts and adjacent New York. The trail extends from Shagroy Road in Millerton, New York, north along the ridgecrest of the southern Taconic Range and the border of New York and Massachusetts, and ends north of the Catamount Ski Area on Massachusetts Route 23 700 feet (210 m) east of the New York border in Egremont, Massachusetts. The Appalachian Trail, which traverses an adjacent ridgeline in the same mountain range, parallels the South Taconic Trail 3 mi (4.8 km) to the east. The trails are connected to one another via shorter trails.