Best Western Southgate Motel Mount Gambier is located on Commercial Street East, just 1 km from the town centre. Blue Lake, Mother Mary Mackillop Schoolhouse, Coonawarra Wineries and numerous caves, golf, clubs, shopping and hotel speedway are nearby. Mount Gambier has a Domestic Airport located on the North of the town, and regular flights are operated by Regional Express (Rex) Airlines and O`Connor Airlines from Adelaide to Melbourne. The closest International airport is located in either Adelaide or Melbourne. Mount Gambier is located 445 km South-East of Adelaide and 550 km West of Melbourne. It is on the Princes Highway (1) between Adelaide and Melbourne. Guests can also get to Mount Gambier via the Hamilton and Glenelg Highways from Ballarat or Geelong, the Wimmera Highway from Horsham to near Penola, or the alternative and popular route from Keith, via Naracoorte and Penola.