The Oaks Stakes is a Group 1 flat horse race in Great Britain open to three-year-old fillies. It is run at Epsom Downs over a distance of 1 mile, 4 furlongs and 6 yards, about 1½ miles, and it is scheduled to take place each year in late May or early June. It is the second-oldest of the five Classic races, after the St Leger. Officially the Betfred Oaks, it is also popularly known as simply The Oaks. Though it is occasionally referred to as the Epsom Oaks, at least outside the UK, 'Epsom' is not part of the official title of the race.