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 US. The event is the second round of the WeatherTech 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. In 2012 the race was the opening event of the FIA World Endurance Championship.