The Gnoo Blas Motor Racing Circuit was a motor racing circuit at Orange, New South Wales, Australia. The circuit was formed from rural roads and highways outside the town, around the grounds of Bloomfield Hospital and what is now known as Sir Jack Brabham Park. It was 6.03 km long. The name came from the Aboriginal name for nearby Mount Canobolas. It held the first ever Australian Touring Car Championship race in 1960. It closed in 1961 with problems with police.
The circuit played a crucial part in the growth of Australian open wheel racing in the post war era but faded before the peak created by the Tasman Series. Source Wikipedia