The 1940 South Australian Hundred was a motor race staged at the Lobethal Circuit in South Australia on 1 January 1940.
[1] It was held over 12 laps[1] of the 8¾ mile course,[2] a total distance of 100 miles.
[2] The race was contested on a handicap basis with the slowest cars starting first and the fastest last.
[3] The "limit man", RS Uffindell (Austin 7), commenced the race 23 minutes before the "virtual scratch man", Alf Barrett (Alfa Romeo Monza).
[1] The race was won by Jack Phillips driving a Ford V8.