How many teams were represented in the pair of motor races held on 18 and 19 April 2015 at the Bahrain International Circuit in Sakhir, Bahrain?
2015 Bahrain GP2 Series round The 2015 Bahrain GP2 Series round was a pair of motor races held on 18 and 19 April 2015 at the Bahrain International Circuit in Sakhir, Bahrain as part of the GP2 Series. It was the first round of the 2015 GP2 Series and was run in support of the 2015 Bahrain Grand Prix. The first race, a 32-lap feature event, was won by ART Grand Prix driver Stoffel Vandoorne who started from the pole position. Rio Haryanto finished second for the Campos Racing team, and Racing Engineering driver Alexander Rossi came third. Haryanto won the second event, a 23-lap sprint race, ahead of Vandoorne in second, and Lazarus driver Nathanaël Berthon in third.
2015 24 Hours of Le Mans The 83rd 24 Hours of Le Mans (French: "83 24 Heures du Mans" ) was an automobile endurance event held from 10 to 14 June 2015 at the Circuit de la Sarthe, Le Mans, France. It was the 83rd running of the 24 Hour race organised by the Automobile Club de l'Ouest as well as the third round of the 2015 FIA World Endurance Championship. A test day was held two weeks prior to the race on 31 May. A record-breaking 263,500 people attended the event.