The 1955 World Sports Car Championship was contested over a six race series. With legendary races such as the Mille Miglia and the RAC Tourist Trophy now part of an international race calendar, they were accompanied by the 24 Hours of Le Mans and 12 Hours of Sebring. The championship started in January, with a trip to Argentina for the 1000 km Buenos Aires and ended with an event new to the championship, the legendary road race, the Targa Florio. As a result of the Le Mans disaster, both the 1000 km Nürburgring and the Carrera Panamericana were cancelled.