Boston, MA: The Patriots’ Day Parade starts at 9:15 a.m. at City Hall Plaza. Participants will march from: Cambridge Street to Tremont Street, left to Bromfield Street, left to Washington Street, right to State Street, left to Congress Street (east side of roadway); right to Hanover Street, and; ending at the Paul Revere Mall. Streets along the route will be closed to traffic briefly as the parade proceeds.