1950 British Grand Prix
The 1950 British Grand Prix, formally known as The Royal Automobile Club Grand Prix d'Europe Incorporating The British Grand Prix, was a Formula One motor race held on 13 May 1950 at the Silverstone Circuit in Silverstone, England. It was the first World Championship Formula One race in the modern era, as well as the fifth British Grand Prix, and the third to be held at Silverstone after motor racing resumed after World War II. It was the first race of seven in the 1950 World Championship of Drivers.
2000 Silverstone 500 USA Challenge
This event was the first American Le Mans Series race held outside of North America. It served as a precursor to the creation of the European Le Mans Series by gauging the willingness of European teams from the FIA Sportscar Championship and FIA GT Championship to participate in a series identical to the American Le Mans Series. This event also shared the weekend at Silverstone with an FIA GT round, with some GT teams running both events.