Prix du Jockey Club initially 2,500 metres, and this was cut to 2,400 metres in 1843. It was switched to Versailles during the Revolution of 1848, and it was cancelled due to the Franco-Prussian War in 1871. The race was abandoned in 1915, and for three years thereafter it was replaced by the Prix des Trois Ans. This took place at Moulins in 1916, Chantilly in 1917 and Maisons-Laffitte in 1918. The first two runnings after World War I were held at Longchamp. A substitute race called the Prix de Chantilly was run at Auteuil over 2,600 metres in 1940. The Prix du Jockey
Prix du Cadran Prix du Cadran The Prix du Cadran is a Group 1 flat horse race in France open to thoroughbreds aged four years or older. It is run at Longchamp over a distance of 4,000 metres (about 2½ miles), and it is scheduled to take place each year in early October. It is France's most prestigious race for "stayers" – horses which specialise in racing over long distances. It is the French equivalent of the Gold Cup, the leading stayers' race in Great Britain. The event is named after a clock face ("cadran") at the École Militaire, a building located alongside