The Badminton Horse Trials is a five-day event, one of only seven annual Concours Complet International (CCI) Five Star events as classified by the Fédération Équestre Internationale (FEI).Together with the five-star rated Kentucky Three-Day Event and the Burghley Horse Trials, Badminton forms the Rolex Grand Slam of Eventing.
Badminton was first held in 1949 by the 10th Duke of Beaufort in order to let British riders train for international events, and was advertised as "the most important horse event in Britain". It was the second three-day event held in Britain, with the first being its inspiration – the 1948 Summer Olympics. The first Badminton had 22 horses from Britain and Ireland start, and was won by Golden Willow.
The cross-country day at Badminton attracts crowds of up to a quarter of a million and is the second largest in the world for money made (after the Indianapolis 500)