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
George Moore (jockey) Del Mar Racetrack. In 1957 and 1958 George Moore won the Jockeys' Premiership at Sydney then in 1959 accepted an offer to ride in Europe for trainer/owner Alec Head of Haras du Quesnay and another major owner, Prince Aly Khan. There, he won the Prix du Jockey Club and the Prix de l'Arc de Triomphe, as well as a British Classic Race, the 2,000 Guineas. Returning to Sydney, Moore continued to win Jockeys' Premierships and in 1967 returned for a time to compete in Europe for trainer Noel Murless where he won the first three 1967 British Classics, the 1,000