Brace Mountain is the peak of a ridge in the southern Taconic Mountains, near the tripoint of the U.S. states of New York, Connecticut and Massachusetts. Its 2,311-foot (704 m) main summit is located in New York; it is the highest point in that state's Dutchess County.
The New York and Massachusetts portions of the mountain are within protected areas; Taconic State Park and Mount Washington State Forest respectively. The Connecticut portions are privately owned and conserved.
It is a challenging yet popular hike since its summit, along with 2,304-foot (702 m) subpeak South Brace Mountain, are along the 15.7 mi (25.3 km) South Taconic Trail. Hikers approach the mountain either from the New York side on the west via the South Taconic or from another trail following the Connecticut-Massachusetts state line on the east, a route that allows them to visit both the tristate marker and the highest point in Connecticut, near the summit of Mount Frissell, along the way. Brace's bald summit, marked by a large cairn, offers views in all directions, particularly to the Hudson Valley and Catskills to the west. It has become a popular site for launching hang gliders and paragliders.