part of Intercontinental GT Challenge
part of Blancpain Endurance Series
part of European Touring Car Championship
part of FIA GT Championship
part of Spa 24 Hours for GT cars since 2001
part of World Sportscar Championship
race interrupted by COVID-19 pandemic in 2020
race interrupted by World War II
race run on current 7 km circuit since 1979
race run on original 14 km circuit until 1978