The Baltimore and Ohio Railroad was the first common carrier railroad and the oldest railroad in the United States. It operated as B&O from 1830 until 1987, when it was merged into the Chessie System; its lines are today controlled by CSX Transportation.
The Capitol Limited is a temporarily discontinued daily Amtrak train between Washington, D.C., and Chicago, running 764 miles (1,230 km) via Pittsburgh and Cleveland. Service began in 1981. On November 10, 2024, Amtrak temporarily combined the Capitol Limited and Silver Star, producing a Chicago-Washington–Miami route, the Floridian.
The Maryland Area Rail Commuter (MARC) is a commuter rail system in the Washington–Baltimore area. MARC is administered by the Maryland Transit Administration (MTA) and operated under contract by Alstom and Amtrak on track owned by CSX Transportation (CSXT) and Amtrak. In 2023, the system had a ridership of 3,860,600, or about 13,900 per weekday as of the third quarter of 2024, less than pre-COVID-19 pandemic weekday ridership of 40,000.
Rockville station is an intermodal train station located in downtown Rockville, Maryland, United States. It is served by the Washington Metro Red Line, MARC Brunswick Line commuter trains, and Amtrak Floridian intercity trains.
Baltimore Penn Station—formally, Baltimore Pennsylvania Station—is the main inter-city passenger rail hub in Baltimore, Maryland. Designed by New York City architect Kenneth MacKenzie Murchison (1872–1938), it was constructed in 1911 in the Beaux-Arts style of architecture for the Pennsylvania Railroad. It is located at 1515 N. Charles Street, about a mile and a half north of downtown and the Inner Harbor, between the Mount Vernon neighborhood to the south, and Station North to the north. Originally called Union Station because it served the Pennsylvania Railroad and Western Maryland Railway, it was renamed to match the PRR's other main stations in 1928.
The Queen City Hotel was constructed in 1871 by the Baltimore and Ohio Railroad (B&O) in Cumberland, Maryland to serve both as a train station and as a destination. Hosting 174 rooms, it also had such features as formal gardens with a fountain, a ballroom and 400-seat dining room. It was torn down in 1972 to make room for a new main United States Post Office and Distribution facility with a much smaller station for Amtrak service between the new Post Office and the railroad tracks.
The Floridian was a train operated by Amtrak from 1971 to 1979 that ran between Chicago and Florida, with two branches south of Jacksonville terminating at Miami and St. Petersburg. For its Nashville to Montgomery segment, its route followed that of several former Louisville & Nashville Railroad (L&N) passenger trains, including the Pan-American and the Humming Bird. Originating in Chicago, the train served Lafayette and Bloomington, Indiana; Louisville and Bowling Green, Kentucky; Nashville, Tennessee; Decatur, Birmingham, Montgomery and Dothan, Alabama; and Thomasville, Valdosta and Waycross, Georgia.
The National Limited was the premier train of the Baltimore and Ohio Railroad (B&O) on its route between Jersey City, New Jersey, and St. Louis, Missouri, with major station stops in Washington, D.C., and Cincinnati, Ohio. It operated from 1925 to 1971. For much of its life it offered exclusive all-Pullman service, and it was the first long-distance train to be entirely air-conditioned. The National Limited was one of many trains discontinued when Amtrak began operations on May 1, 1971. Amtrak revived the name for another New York–St. Louis service which did not use the B&O route.
The Brunswick Line is a MARC commuter rail line between Washington, D.C., and Martinsburg, West Virginia, with a branch to Frederick, Maryland. It primarily serves the northern and western suburbs of Washington. The line, MARC's second longest at 74 miles, is operated under contract to MARC by Alstom and runs on CSX-owned track, including the Metropolitan, Old Main Line, and Cumberland subdivisions. It is the successor to commuter services provided by the Baltimore and Ohio Railroad (B&O), which date to the mid-19th century.
The CSX Cumberland Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. states of Maryland and West Virginia. The line runs from Brunswick, Maryland, west to Cumberland, Maryland, along the old Baltimore and Ohio Rail Road (B&O) main line. At its east end, the Cumberland Subdivision becomes the Metropolitan Subdivision; at its west end at Cumberland, Maryland it becomes the Cumberland Terminal Subdivision. It meets the Shenandoah Subdivision at Harpers Ferry, West Virginia, and the Lurgan Subdivision in Cherry Run, West Virginia.
South Bend is a train station in South Bend, Indiana. It is served by Amtrak's Lake Shore Limited between Chicago, Boston and New York City, and Floridian between Chicago and Miami. The station was built by the Chicago South Shore and South Bend Railroad in 1970; South Shore Line trains continued to use it until 1992.
Harpers Ferry station is a railway station in Harpers Ferry, West Virginia. It is served by the Amtrak Floridian intercity service as well as MARC Brunswick Line commuter service. The station is listed on the National Register of Historic Places as part of the Harpers Ferry Historic District. It has two side platforms serving the two tracks of the CSX Cumberland Subdivision. The station is not accessible.
Martinsburg station is a railway station in Martinsburg, West Virginia, United States, served by MARC Brunswick Line commuter rail service and Amtrak Floridian intercity rail service. The station has one side platform serving a siding track of the CSX Cumberland Subdivision, with a footbridge crossing the siding and the two main tracks to provide access to the preserved Baltimore and Ohio Railroad Martinsburg Shops complex.
The B & O Railroad Potomac River Crossing is a 15-acre (6.1 ha) historic site where a set of railroad bridges, originally built by the Baltimore and Ohio Railroad, span the Potomac River between Sandy Hook, Maryland and Harpers Ferry, West Virginia. The site was added to the National Register of Historic Places on February 14, 1978, for its significance in commerce, engineering, industry, invention, and transportation.
Silver Spring station is a former train station on the Metropolitan Subdivision in Silver Spring in Montgomery County, Maryland. It was built in 1945 by the Baltimore and Ohio Railroad on the foundation of a previous station, a Victorian-style brick structure built in 1878. It served intercity trains until 1986 and commuter rail until 2000. Today, it is owned and operated as a museum by Montgomery Preservation, Inc., a non-profit organization.
The West Virginian, later known as the Potomac Turbo and Potomac Special, was a daily passenger train operated by Amtrak between Washington, D.C., and Parkersburg, West Virginia. This route was previously served by the Baltimore & Ohio's (B&O) train of the same name, and was the first of several services in the state of West Virginia established at the behest of US Representative Harley Orrin Staggers, the powerful chair of the House Interstate and Foreign Commerce Committee. This patronage earned the train the derisive sobriquets "Harley's Hornet" and the "Staggers Special".
The Shenandoah was a daily passenger train operated by Amtrak between Washington and Cincinnati from 1976 until 1981.
The Blue Ridge was a daily Amtrak passenger train that operated between Washington, D.C., and Cumberland, Maryland. Service began in 1973; it was merged into the MARC Brunswick Line commuter rail service in 1986.
The Cumberland Terminal Subdivision is a railroad line owned and operated by CSX Transportation in the Cumberland, Maryland area. The line centers on the Cumberland rail yard and is a junction with three other subdivisions.
Allegany County Transit 
