The 12 Hours of Sebring is an annual motorsport endurance race for sports cars held at Sebring International Raceway, on the site of the former Hendricks Army Airfield World War II air base in Sebring, Florida. The event is the second round of the United SportsCar Championship and in the past has been a round of the now defunct World Sportscar Championship, IMSA GT Championship and American Le Mans Series. Sebring is known as preparation for the 24 Hours of Le Mans, as the track’s extremely bumpy surface, combined with south-central Florida’s perennial hot weather, is a test of a car’s reliability. In recent years, six overall victories have been achieved by the Audi R8, one fewer than the record seven wins of the Porsche 935.
