Highway 1 (Western Australia)
In Western Australia, Highway 1 is a 5,305-kilometre (3,296 mi) long route around the state, from the South Australian border near Eucla to the Northern Territory border near Kununurra. Highway 1 continues around the rest of Australia, joining all mainland state capitals, and connecting major centres in Tasmania.
Source: Wikipedia — Highway 1 (Western Australia) (CC BY-SA 4.0)