1000 Guineas Stakes 1000 Guineas Stakes The 1000 Guineas Stakes is a Group 1 flat horse race in Great Britain open to three-year-old fillies. It is run on the Rowley Mile at Newmarket over a distance of 1 mile (1,609 metres), and it is scheduled to take place each year in late April or early May on the Sunday following the 2000 Guineas Stakes. It is the second of Britain's five Classic races, and the first of two restricted to fillies. It can also serve as the opening leg of the Fillies' Triple Crown, followed by the Oaks and the St Leger, but
Commonwealth Cup (horse race) Commonwealth Cup (horse race) The Commonwealth Cup is a Group 1 flat horse race in Great Britain open to horses aged three years. It is the only Group 1 flat race in Great Britain exclusively for three-year-olds that allows geldings to compete and the first age-restricted Group 1 race which is open to geldings in Europe. It is run at Ascot over a distance of 6 furlongs (1,207 metres), and it is scheduled to take place each year in June. The Commonwealth Cup was introduced in 2015 as part of a set of changes to the programme of sprint horse