The Kentucky Oaks is a Grade I stakes race for three-year-old Thoroughbred fillies staged annually in Louisville, Kentucky, United States. The race currently covers 1+1⁄8 miles (1,800 m) at Churchill Downs; the horses carry 121 pounds (55 kg). The Kentucky Oaks is held on the Friday before the Kentucky Derby each year. The winner gets $846,300 of the $1,500,000 purse, and a large garland blanket of lilies, resulting in the nickname "Lillies for the Fillies." A silver Kentucky Oaks Trophy is presented to the winner.

Churchill Downs is a horse racing complex located on Central Avenue in south Louisville, Kentucky, United States, famed for hosting the annual Kentucky Derby. It officially opened in 1875 and was named for Samuel Churchill, whose family was prominent in Kentucky for many years. The first Kentucky Derby, a Thoroughbred sweepstakes and part of today's horse racing Triple Crown, and the first Kentucky Oaks were held in the same year. Churchill Downs has also hosted the renowned Breeders' Cup on nine occasions, most recently on November 2 and 3, 2018.