The Prix de l'Arc de Triomphe is a prestigious horse race held annually in France, typically on the first Sunday of October. It takes place at the Longchamp Racecourse in Paris and is open to thoroughbred horses aged three years and older. The race covers a distance of 2,400 meters and is known for its challenging conditions and high level of competition. Established in 1920, the Arc is one of the most important races in the world, attracting top horses, trainers, and jockeys from various countries. It offers a significant prize purse, making it a key event in the international horse racing calendar.