2013 International Sports Car Weekend

American Le Mans Series (ALMS) president Scott Atherton confirmed the race was part of the schedule for the 2013 American Le Mans Series schedule in October 2012.

[1] It was the first year the event was held as part of the American Le Mans Series.

[2] The race was held at the twenty-turn 3.426 mi (5.514 km) Circuit of the Americas in Austin, Texas on September 21, 2013.

Cars failing to complete 70% of their class winner's distance are marked as Not Classified (NC).

(Isobutanol) Marino Franchitti Scott Tucker Bill Sweedler

Map of the Circuit of the Americas - Grand Prix Circuit
Circuit of the Americas (pictured in 2015) , where the race was held.