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 Cadran 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 run at Longchamp over a distance of 4,000 metres (about 2½ miles), and it is scheduled to take place each year in early October. It is France's most prestigious race for "stayers" – horses which specialise in racing over long distances. It is the French equivalent of the Gold Cup, the leading stayers' race in Great Britain. The event is named after a clock face ("cadran") at the École Militaire, a building located alongside