The Tour Down Under (currently branded as the Santos Tour Down Under for sponsorship reasons) is a cycling race in and around Adelaide, South Australia. It is traditionally the opening event of the UCI World Tour and UCI Women’s WorldTour. The event was established in 1999 with the support of then Premier of South Australia John Olsen as part of an effort to strengthen the state’s sporting calendar after the Australian Grand Prix moved from Adelaide to Melbourne, Victoria.
https://en.wikipedia.org/wiki/Tour_Down_Under