Prix du Moulin de Longchamp (the "grande piste") in 1987. The race was rescheduled for mid-September in 2011. Most successful horse: Leading jockey (6 wins): Leading trainer (6 wins): Leading owner (4 wins): The 2016 and 2017 races took place at Chantilly while Longchamp was closed for redevelopment. Prix du Moulin de Longchamp The Prix du Moulin de Longchamp is a Group 1 flat horse race in France open to thoroughbred colts and fillies aged three years or older. It is run at Longchamp over a distance of 1,600 metres , and it is scheduled to take place each year in September. The event is
Prix du Jockey Club Club was staged at Longchamp in 1941 and 1942, and at Le Tremblay over 2,300 metres in 1943 and 1944. It returned to Longchamp for the following three years, and on the second occasion it was opened to foreign participants. The present system of race grading was introduced in 1971, and the Prix du Jockey Club was classed at the highest level, Group 1. The first foreign-trained horse to win was Assert in 1982. The distance was shortened to 2,100 metres in 2005. Nine winners of the Prix du Jockey Club have subsequently won the Prix de l'Arc de Triomphe.