The 2009 Petit Le Mans powered by Mazda6 was the twelfth running of the Petit Le Mans and the ninth round of the 2009 American Le Mans Series season. It took place at the Road Atlanta circuit in Braselton, Georgia, on September 26, 2009. Originally scheduled to run for a distance of 1,000 miles (1,600 km) or a time of ten hours, the race was stopped after four hours due to heavy rains. The race was not restarted and the results were determined from the final lap prior to the stoppage.