1964 Armstrong 500Previous1963Next1965 The 1964 Armstrong 500 was a production car race held on 4 October 1964 at the Mount Panorama Circuit just outside Bathurst in New South Wales, Australia. The 500 mile race was open to Australian built production sedans of which 100 examples had been registered. It was the fifth Armstrong 500 and the second to be held at Bathurst although it is commonly referred to as the fifth "Bathurst 500".