The Atlantic Coast Line Railroad’s Main Line was the backbone of the Atlantic Coast Line Railroad's network in the southeastern United States. The main line ran from Richmond, Virginia to Port Tampa just southwest of Tampa, Florida, a distance of nearly 900 miles. Along its route it passed through Petersburg, Rocky Mount, Florence, Charleston, Savannah, Jacksonville, and Orlando. With the exception of a short 61-mile segment in Greater Orlando (which is now state-owned), the entire line is still owned by the Atlantic Coast Line's successor, CSX Transportation, and is still in service as their A Line.