M66 (New York City bus)

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m66
Nova Bus RTS on the M66 entering service at East 65th Street and West End Avenue
Overview
System	MTA New York City Bus
Operator	New York City Transit Authority
Garage	Michael J. Quill Depot
Vehicle	New Flyer Xcelsior XD40 New Flyer Xcelsior XE40 Nova Bus LFS HEV
Began service	February 15, 1935
Route
Locale	Manhattan, New York, U.S.
Communities served	Upper West Side, Lincoln Square, Upper East Side, Lenox Hill
Start	Upper West Side - 66th Street & West End Avenue
Via	66th Street, 67th Street (westbound) 65th Street, 68th Street (eastbound)
End	Upper East Side – 68th Street & York Avenue
Length	2.1 miles (3.4 km)
Other routes	M72 72nd Street Crosstown
Service
Operates	All times except late nights
Annual patronage	1,728,433 (2023)[1]
Transfers	Yes
Timetable	M66
Route map ← M60  {{{system_nav}}}  M72 →

The M66 constitutes a public transit line in Manhattan. Originally ran by the Comprehensive Omnibus Company, it is now ran by the MTA Regional Bus Operations under the New York City Transit Authority brand, running between the Upper East Side and Upper West Side as one of Manhattan's numerous crosstown bus routes.