The running of the Quilpie Cup each year honours the memory of two brothers who are legends of bush racing in outback Queensland. The Quilpie Diggers’ Race Club has a proud tradition of bush racing, and is named for the Diggers returning from the First World War, it was the club of outback racing legends, including Bill and KJ Costello, Alf Mead and EJ Pegler.
The club has held its annual thoroughbred meeting in May every year, the Quilpie Cup, followed by a station horse challenge each September. Each year the Quilpie Cup honours the memory of the two brothers, Bill and KJ Costello, who were renowned in outback racing circles.