Formula One, abbreviated to F1, is currently the highest class of open-wheeled auto racing defined by the Fédération Internationale de l'Automobile (FIA), motorsport's world governing body. The "formula" in the name refers to a set of rules to which all participants and vehicles must conform. The Formula One World Championship season consists of a series of races, known as , usually held on purpose-built circuits, and in a few cases on closed city streets. The results of each race are combined to determine two annual championships, one for drivers (World Drivers' Championship), and one for constructors (World Constructors' Championship). This list is for the circuits that hosted World Championship races from 1950 until now. The terms "Formula One race" and "World Championship race" were not always synonymous throughout history – see for a detailed explanation. History The first World Championship Grand Prix was held in at Silverstone; since then 76 circuits in total have hosted a Grand Prix. A lot of classic (older) circuits have hosted using different configurations throughout their history: Nürburgring, Spa-Francorchamps, Monza, etc. Taking Nürburgring as an example, the first World Championship race there used the configuration, but concerns over safety meant that more recent have used a shorter, safer circuit. Formula One circuits were predominantly in Europe during the early years of the championship; as the sport has expanded, so has the location of its circuits. The expansion into Asia and America has been a recent occurrence. Of the 20 circuits that hosted a Grand Prix in , nearly half were not on the calendar before . The Autodromo Nazionale Monza has hosted the most World Championship races; the only season it did not host a race was in , when the Italian Grand Prix was held at the Autodromo Enzo e Dino Ferrari. The Miami International Autodrome became the 76th circuit to host a Grand Prix, when it held the Miami Grand Prix in 2022; this is the latest addition to this list. The longest circuit to have hosted a Grand Prix is the Pescara Circuit, which hosted the 1957 Pescara Grand Prix: the long circuit in Pescara, Italy, held the annual Coppa Acerbo race, and in it was the only time that this race was included as part of the World Championship, a race which Stirling Moss won. The Las Vegas Street Circuit is due to host its first Grand Prix in 2023, with