The Oaks Trial Stakes is a Listed flat horse race in Great Britain open to three-year-old fillies.
It is run over a distance of 1 mile, 3 furlongs and 133 yards (2,334 metres) at Lingfield Park in May.
Prior to World War II, it was called the Oaks Trial Plate.
It has an undulating, cambered terrain with a sharp downhill turn into the home straight.
The Oaks Trial Stakes was formerly contested over 1 mile and 4 furlongs.