Concours Hippique International Officiel

A Concours Hippique International Officiel (CHIO) (from French, meaning "Official International Equestrian Competition") is an FEI-sanctioned horse show with international-level competitors in equestrian sports such as show jumping, dressage, eventing, and combined driving. In a CHIO, there are individual and team competitions. Nation-teams consist of three or four riders from the same country. Only one CHIO may take place in each FEI member country per year, but not all countries have a CHIO. Two notable long-standing CHIOs are CHIO Aachen in Germany (since 1924) and CHIO Rotterdam in Netherlands, which has traditionally taken place at the Kralingse Bos since 1948.