Washington Metro

The Washington Metro, often abbreviated as the Metro and formally the Metrorail, is a rapid transit system serving the Washington metropolitan area of the United States. It is administered by the Washington Metropolitan Area Transit Authority (WMATA), which also operates the Metrobus service under the Metro name. Opened in 1976, the network now includes six lines, 98 stations, and 130 miles (210 km) of route. Metro serves Washington, D.C., and the states of Maryland and Virginia. In Maryland, Metro provides service to Montgomery and Prince George's counties; in Virginia, to Arlington, Fairfax and Loudoun counties, and to the independent city of Alexandria. The system's most recent expansion, the construction of an infill station serving Potomac Yard, opened on May 19, 2023. It operates mostly as a deep-level subway in more densely populated parts of the D.C. metropolitan area (including most of the District itself), while most of the suburban tracks are at surface level or elevated. The longest single-tier escalator in the Western Hemisphere, spanning 230 feet (70 m), is located at Metro's deep-level Wheaton station. In 2025, the system had a ridership of 188,549,700, or about 675,100 per weekday as of the second quarter of 2026, making it the second-busiest heavy rail rapid transit system in the United States, in number of passenger trips, after the New York City Subway, and the fifth-busiest in North America. In June 2008, Metro set a monthly ridership record with 19,729,641 trips, or 798,456 per weekday. In 2025, Metro also led the nation in ridership growth, with 54 consecutive months of year-on-year growth. Fares vary based on the distance traveled, the time of day, and the type of card used by the passenger. Riders can enter and exit the system by using either contactless payment or a proximity card called SmarTrip.