a city in northwest France where a famous car race takes place every year. The race continues without stopping for 24 hours, and the winner is the car that has driven the most times around the track in that time. Automobile race. It is perhaps the best-known automobile race in the world, run annually (with few exceptions) since 1923 at the Sarthe road-racing circuit, near Le Mans, France. The winner is the car that travels the greatest distance in a 24-hour period. The racing circuit is 8.3 mi (13.4 km) long, and the race is open only to sports cars (see sports-car racing)