Adelaide is the capital and most populous city of the Australian state of South Australia, and is the fifth largest city in Australia, with a population of more than 1.1 million. It is a coastal city beside the Southern Ocean, and is situated on the Adelaide Plains, north of the Fleurieu Peninsula, between the Gulf St. Vincent and the low-lying Mount Lofty Ranges. It is roughly 20 km (12 mi) from the coast to the foothills but sprawls 90 km (56 mi) from Gawler at its northern extent to Sellicks Beach in the south.Read more about Adelaide on Wikipedia