The 24 Hours of Le Mans is the world's oldest active sports car race in endurance racing, held annually since 1923 near the town of Le Mans, France. It is considered one of the most prestigious automobile races in the world and has been called the "Grand Prix of Endurance and Efficiency". The event represents one leg of the Triple Crown of Motorsport, with the other events being the Indianapolis 500 and the Monaco Grand Prix. Unlike fixed-distance races whose winner is determined by minimum time, the 24 Hours of Le Mans is won by the car that covers the greatest distance in 24 hours. Racing teams must balance the demands of speed with the cars' ability to run for 24 hours without mechanical failure. In the 2019 race, 47 of the 61 qualifying cars ran the full duration.
