Prix du Cadran late May. It was opened to geldings in 1986. The race was moved to the Saturday of Prix de l'Arc de Triomphe weekend in 1991. It was later switched to the same day as the "Arc", usually the first Sunday in October. Most successful horse (4 wins): Leading jockey (5 wins): Leading trainer (15 wins): Leading owner (11 wins): The 2016 and 2017 races took place at Chantilly while Longchamp was closed for redevelopment. Prix du Cadran The Prix du Cadran is a Group 1 flat horse race in France open to thoroughbreds aged four years or older. It 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.