Silverstone Circuit
Silverstone is the current home of the British Grand Prix, which it first hosted in 1948. The 1950 British Grand Prix at Silverstone was the first race in the newly created World Championship of Drivers. The race rotated between Silverstone, Aintree and Brands Hatch from 1955 to 1986, but relocated permanently to Silverstone in 1987.
Bridgehampton Race Circuit
Bridgehampton Race Circuit was a race track located near Sag Harbor, New York, United States. The circuit opened in 1957, following a series of road races held from 1949 until 1953. It was one of the first permanent road racing venues in the United States, opening after Thompson Speedway, two years after Road America, the year after Watkins Glen International, and the same year as Lime Rock Park and Laguna Seca Raceway. In its early years, Bridgehampton was host to major international series, including the World Sportscar Championship, Can-Am, and NASCAR Grand National. By the early 1970s, the track was used mostly for amateur events. From its opening day to the mid 90's the AMA (Championship Cup Series in the 90's) hosted events twice a month and was a favorite to many motorcycle road racers. The track closed permanently in 1998.