Natroun over 2400 metres at Longchamp Racecourse on 7 May. Two weeks later he contested the Prix de l'Avre over the same course and distance and won by five lengths from Bilal. Following the race, the colt's owner paid a supplementary entry fee of approximately £15,200 to enter the horse in the Prix du Jockey-Club, reportedly at the urging of Saint-Martin. On 7 June, Natroun contested the 150th running of the Prix du Jockey-Club over 2400 metres at Chantilly Racecourse. In France, horses in the same ownership or stable are coupled for betting purposes. The Vincent O'Brien pair Ancient Times and
Horse racing a Saturday and one on Sunday. Horse races, as well as Thoroughbred horse breeding, is organized by Jockey Club Czech Republic, founded in 1919. France has a major horse racing industry. It is home to the famous Prix de l'Arc de Triomphe held at Longchamp Racecourse, the richest race in Europe and the second richest turf race in the world after the Japan Cup, with a prize of 4 million Euros (approximately US$5.2 million). Other major races include the Grand Prix de Paris, the Prix du Jockey Club (the French Derby) and the Prix de Diane. Besides Longchamp, France's other