San Vicente is a town and administrative centre of San Vicente Partido, in the province of Buenos Aires, Argentina. The southernmost town in the Greater Buenos Aires metropolitan area, San Vicente is 48 km (30 mi) from downtown Buenos Aires, and can be accessed from Constitución Station by bus via Line 79 or a 20-minute drive by Provincial Route 58 from Ezeiza International Airport. The city has about 21,000 inhabitants per the 2001 census [INDEC].

The Buenos Aires Great Southern Railway (BAGS) was one of the Big Four broad gauge, 5 ft 6 in, British-owned companies that built and operated railway networks in Argentina. The company was founded by Edward Lumb in 1862 and the first general manager was Edward Banfield after whom the Buenos Aires suburban station of Banfield was named, when it opened in 1873. After president Juan Perón nationalised the Argentine railway network in 1948 it became part of the state-owned company Ferrocarril General Roca.