Epsom Downs is a Grade 1 racecourse located in Epsom, Surrey, England which is used for thoroughbred horse racing. The "Downs" referred to in the name are part of the North Downs. The course, which has a crowd capacity of 130,000, is best known for hosting the Derby Stakes which has come to be widely referred to as the Epsom Derby, the United Kingdom's premier thoroughbred horse race for three-year-old colts and fillies, over a mile and a half (2400m).