24 Hours of Le Mans
The cars must run for 24 hours without mechanical damage. It is important to manage the cars' consumables, mostly fuel, tires and braking materials. The driver goes over two hours behind the wheel before stopping in the pits. Then a relief driver takes over the driving duties. Drivers then eat and rest before returning to drive. Today it is a rule that three drivers share each car.
At the end of the 24 hours, the car which has driven the most laps of the track wins the race. Different types of cars race in different categories. Currently there are four different categories, with the fastest cars racing in the 'LMP1' category.
The race is held in June. This can lead to very hot conditions for the drivers. The race begins in mid-afternoon. The drivers race through the night and following morning. They then finish at the same time the race started, the following day.