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.

The Six Hours of Watkins Glen (currently sponsored as the Sahlen's Six Hours of The Glen) is a sports car endurance race held annually at Watkins Glen International in Watkins Glen New York. The race dates from 1948 and has been a part of the SCCA National Sports Car Championship United States Road Racing Championship World Sportscar Championship IMSA GT Championship Rolex Sports Car Series and currently the IMSA WeatherTech SportsCar Championship.

Canadian Tire Motorsport Park is a multi-track motorsport venue located north of Bowmanville, Ontario, Canada, approximately 75 kilometers east of Toronto. The facility features a 3.957 km, 10-turn road course; a 2.9 km advance driver and race driver training facility with a 0.402 km skid pad and a 1.5 km kart track.

Road America is a permanent road course. It is located midway between the cities of Milwaukee and Green Bay, and classified as an FIA Grade Two circuit.[3]

The track is situated on 640 acres (260 ha) near the Kettle Moraine Scenic Drive. It has hosted races since September 1955 and currently hosts over 400 events a year.

The Petit Le Mans (French for little Le Mans) is a sports car endurance race held annually at Road Atlanta in Braselton Georgia USA. It uses the rules established for the 24 Hours of Le Mans by the Automobile Club de l'Ouest (ACO) which are slightly modified if necessary mainly to allow additional cars to compete.