The Supercars Championship currently known as the Repco Supercars Championship under sponsorship, is a touring car racing category in Australia and New Zealand, running as an International Series under Fédération Internationale de l'Automobile (FIA) regulations, governing the sport.

The Sandown 500 is an annual endurance motor race which is staged at the Sandown Raceway, near Melbourne, Victoria, Australia from 1964. The event's name, distance – and the category of cars competing in it – has varied widely throughout its history. Most recently, the event was held as a championship event for Supercars from 2003 to 2007 and from 2012 to 2019.