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
Prix du Muguet was introduced in 1967. It was contested over 2,000 metres at Longchamp in 1968. The race was not run in 1971, and it resumed with Group 3 status in 1972. It was absent again in 1974, and for a period thereafter it was sometimes staged at Longchamp (1976–77, 1982–83 and 1985). The Prix du Muguet was promoted to Group 2 level in 1995. Most successful horse (2 wins): Leading jockey (4 wins): Leading trainer (6 wins): Leading owner (3 wins): Prix du Muguet The Prix du Muguet is a Group 2 flat horse race in France open to thoroughbreds aged