 Other endurance races were created after World War II, such as 24 Hour Race in Warsage (Belgium) in 1951, the 500 Miles of Thruxton in 1955, the 24 Hours of Montjuich in Barcelona in 1957, and the 24 hours of Monza (Italy) in 1959.. At the beginning, most races were held over 24 Hours, but soon shorter races were introduced, defined in terms either of distance (500 Miles, 1000 Miles, and much later even 200 Miles) or of time (12 Hours, 8 Hours or 6 Hours).The series was founded in 1960 as the FIM Endurance Cup.Initially it was made up of four races