The C train is a line of the New York City Subway that operates in Manhattan and Brooklyn. It runs from 168th Street in Washington Heights to World Trade Center in Lower Manhattan, making it a vital transportation option for commuters and residents. The C train is known for its blue color on subway maps and is part of the A Division of the subway system. The C train stops at several key stations, including Columbus Circle and West 4th Street, providing access to various neighborhoods and attractions. It operates 24 hours a day, although service frequency may vary during late-night hours. The C train is an essential part of the city's public transit network.