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
Jockey Club Jockey Club Racecourses was formerly called Racecourse Holdings Trust. The fifteen racecourses owned by Jockey Club Racecourses are: Large courses: Smaller courses: Jockey Club The Jockey Club is the largest commercial horse racing organisation in the United Kingdom. No longer responsible for the governance and regulation of British horseracing, today it owns 15 of Britain's famous racecourses, including Aintree, Cheltenham, Epsom Downs and both the Rowley Mile and July Course in Newmarket, amongst other concerns such as the National Stud, and the property and land management company, Jockey Club Estates. The registered charity Racing Welfare is also a company limited