The 2013 6 Hours of Circuit of the Americas was an endurance auto race held at the Circuit of the Americas in Austin, Texas on 20–22 September 2013. 
Qualifying.
Qualifying result.
Pole position winners in each class are marked in bold.
Race.
Race result.
Class winners in bold. Cars failing to complete 70% of winner's distance marked as Not Classified (NC).
References.
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