The Sydney Express was a passenger train which operated between Australia's two most populous cities, Melbourne and Sydney, between 1883 and 1937. The service commenced when the Victorian (broad gauge) railway was extended across the Murray River to Albury to link with New South Wales' standard gauge line. The Sydney Express was superseded in 1937 by the Spirit of Progress, which also terminated at Albury until 1962, when the North East railway line was converted to standard gauge allowing it, and the new Southern Aurora to operate through to Sydney.