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
Prix du Lys Prix du Jockey Club or the Prix de Diane. The Prix du Lys was cancelled in 1940, and was held at Longchamp in 1941 and 1942. It was run at Le Tremblay over 2,300 metres in 1943 and 1944, and at Longchamp again for three years thereafter. The exclusion of Prix du Jockey Club and Prix de Diane entrants ended in 1970. The race was closed to fillies and opened to geldings in 1986. The Prix du Lys was contested over 2,800 metres at Saint-Cloud from 1993 to 1996. In the following years it was run over 2,600 metres at