Route 27 is a 73.44-mile-long (118.19 km) south–north state highway in eastern Massachusetts. Its southern terminus is at Route 106 in Kingston and its northern terminus is at Route 4 in Chelmsford. Along the way it intersects several major highways including Route 24 in Brockton, U.S. Route 1 (US 1) in Walpole, Route 9 in Natick, US 20 in Wayland, and Route 2 in Acton.