Spanish Grand Prix
The first Spanish Grand Prix in 1913 was not actually run to the Grand Prix formula of the day, but to touring car rules, taking place on a 300-kilometre road circuit at Guadarrama, near Madrid, on the road to Valladolid.
1951 Spanish motorcycle Grand Prix
The 1951 Spanish motorcycle Grand Prix was the first round of the 1951 Grand Prix motorcycle racing season. It took place on 8 April 1951 at the Montjuïc circuit.