 The championship season consists of a series of endurance races (with a duration of eight, twelve or twenty-four hours) held on permanent racing facilities.The results of each race are combined to determine three World Championships, riders, teams and manufacturers.Until 2016, the championship is held on a yearly basis, but in order to take advantage of the winter break in MotoGP and Superbikes season, since September 2016 it runs from September to July, with the European races held in September, and then spring and summer of the next year.