1975 Spanish Grand Prix
It was the 21st Spanish Grand Prix since the race was first held in 1913. It was the fourth, and last, Grand Prix to be held on the Montjuïc street circuit. The race was shortened to 29 of its scheduled 75 laps, a race distance of 109 kilometres. The race was won by German driver Jochen Mass driving a McLaren M23. It would be the only Formula One win of his career. Mass had just a second lead over the Lotus 72E of Belgian driver Jacky Ickx when the race was declared. Argentine racer Carlos Reutemann was declared third in his Brabham BT44B, a lap behind the race leaders after a penalty was given to Jean-Pierre Jarier. This was the final win by a German driver until Michael Schumacher won the 1992 Belgian Grand Prix.
Gran Premio de Madrid
An earlier Gran Premio de Madrid, for 3 year olds over 2500 meters, was instituted in 1881 at the Hipódromo de la Castellana in Madrid. It was first called the Gran Premio de Madrid, changed to the Gran Premio Nacional, and then La Copa de su Majesdad el Rey. The modern-day Gran Premio de Madrid is considered to have been instituted in 1919, first held at Casa Real el Hipódromo de Aranjuez/Legamarejo; it was opened to older horses, and intended as an international race. It was moved to the Hipódromo de la Castellana until that racecourse closed in 1933. In 1933 it returned to its original venue at Aranjuez, and in 1934-35 was run at San Sebastián. In 1941 it was moved to the new Hipódromo de la Zarzuela. La Zarzuela went bankrupt in 1994, and the race was not held until new management re-opened the course in 2006. In 2006, after a 13-year hiatus, a 2,400-metre Gran Premio de Madrid was run, and the new weight conditions were 59.5 kilograms for 4 years and older and 52 kilograms for 3 years of age.