The westbound M66 begins at 67th Street and York Avenue, travelling west on 67th Street until 5th Avenue, where it dogleg turns onto the westbound 65th Street Transverse to cross through Central Park. Westbound traffic lets out at 66th Street and Central Park West, where the M66 continues west on 66th Street until West End Avenue, where it terminates. The eastbound M66 begins at 66th Street and West End Avenue, making two right turns to get onto East 65th Street, where it continues eastbound and through the 65th Street Transverse until Madison Avenue, where it continues north and turns to run east on 68th Street until York Avenue, where it terminates. During the morning rush, three eastbound buses originate at
Hunter College at Lexington Avenue. Along the route, there are several connections to the
New York City Subway at: •
Broadway •
Lexington Avenue The M66 is also notorious for being slow and unreliable due to travelling on narrow, heavily trafficked streets in the dense neighborhoods of the Upper West Side and Upper East Side, being tied with the M42 for the slowest buses in the city, moving at an average rate of 3.9 miles per hour in 2012 and earning an "F" ranking for 3 consecutive years from the Bus Turnaround Coalition. ==History==