Prix de Royaumont introduced in 1978, and the race was moved to a date earlier than that of the Prix de Diane. The event was staged at Longchamp from 1987 to 1990, and it was transferred to Saint-Cloud in 1991. Its distance was extended to 2,400 metres in 1992, and it continued to take place at Saint-Cloud until 1996. The race's only subsequent departure from Chantilly was in 2001, when it was run at Saint-Cloud. The Prix de Royaumont is now held on the same day as the Prix du Jockey Club. Prix de Royaumont The Prix de Royaumont is a Group 3
American Jockey Club Cup the race was reduced to 2500 metres in 1967 and then to 2400 metres in 1972 before returning to 2500 metres in 1980. The race was run over its current distance for the first time in 1984. Among the winners of the race have been Special Week, Matsurida Gogh, Tosen Jordan and Rulership. Most successful horse (2 wins): American Jockey Club Cup The American Jockey Club Cup (Japanese アメリカジョッキークラブカップ) is a Grade 2 horse race in for Thoroughbred colts and fillies aged four and over run over a distance of 2,200 metres at Nakayama Racecourse. The race is run in