The Australian train that crosses the Nullarbor Plain between Sydney and Perth is the Indian Pacific.
The train is named for the two oceans at either end of its route: the Pacific Ocean beside Sydney and the Indian Ocean beside Perth. It first ran on 23 February 1970, after standard-gauge improvements made it possible to travel across Australia without changing trains because of differing track gauges.
The full east–west route is about 4,352 kilometres and normally takes roughly three days. One of its most famous sections crosses the Nullarbor Plain along the Trans-Australian Railway, including a 478-kilometre stretch often described as the world’s longest straight section of railway track. The Indian Pacific is often confused with The Ghan, but The Ghan runs north–south between Adelaide and Darwin. The Overland is another Australian service, chiefly associated with the Adelaide–Melbourne corridor, not the Sydney–Perth transcontinental journey.