The Singapore Derby is a thoroughbred horse race held annually in mid July at the Singapore Turf Club. Contested on turf over a left-handed course, the domestic Group 1 race is run over a distance 1,800 metres (9 furlongs) and is open to four-year-old horses only. Since 1959 the race has been contested at various distances: * 2414 metres : 1959-1965, 1968, 1970–1975 * 2,425 metres: 1966 * 2,011 metres: 1967, 1969 * 2,400 metres (about): 1976 * 2,400 metres: 1977-1997 * 2,000 metres (about): 1998 * 2,000 metres: 1999-2017 * 1,800 metres: 2018 to present