Santa Anita Oaks is an American Grade II Thoroughbred horse race held annually in early April at Santa Anita Park in Arcadia, California. Open to three-year-old fillies willing to race 8.5 furlongs (1+1⁄16 miles) on the dirt. The race is a Grade II event with a current purse of $200,000 and has been a prep race to the Triple Tiara of Thoroughbred Racing, including the Kentucky Oaks, the Black-Eyed Susan Stakes and Mother Goose Stakes. Since inception, the race has been set at various distances: