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 Muguet Prix du Muguet The Prix du Muguet is a Group 2 flat horse race in France open to thoroughbreds aged four years or older. It is run over a distance of 1,600 metres (about 1 mile) at Saint-Cloud in early May. The event is traditionally held at Saint-Cloud on May 1, the French public holiday of Fête du Travail and Fête du Muguet. It is named after Muguet, the French word for the spring-flowering plant Lily of the Valley. The Prix du Muguet was formerly a 2,000-metre race restricted to three-year-olds. The present version, a 1,600-metre race for older horses,