The 5 train is a subway line in the New York City Subway system, operated by the MTA. It runs from Eastchester-Dyre Avenue in the Bronx to Flatbush Avenue-Brooklyn College in Brooklyn, covering a distance of approximately 25 miles. The train primarily operates along the Lexington Avenue Line in Manhattan, making it a vital transportation option for commuters. The 5 train is known for its green color on subway maps and operates express service during peak hours, allowing it to skip certain stops. It connects with several other subway lines, enhancing accessibility across the city.