The Oodnadatta Track is an unsealed 614 km (382 mi) outback road in the Australian state of South Australia, connecting Marla in the north-west via Oodnadatta to Marree in the south-east. Along the way, the track passes the settlements of Oodnadatta and William Creek, the southern lake of the Kati Thanda-Lake Eyre National Park, and mound springs known as Freeling Springs, Strangways Springs, and The Bubbler and Blanche Cup.

Oodnadatta is a small, remote outback town and locality in the Australian state of South Australia, located 1043 kilometres north-north-west of the state capital of Adelaide by road or 873 km (542 mi) direct, at an altitude of 112 metres. The unsealed Oodnadatta Track, an outback road popular with tourists, runs through the town.