Epsom Downs is a Grade 1 racecourse on the hills associated with Epsom in 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 when taking into account people watching from the Epsom Downs, an area freely available to the public, is best known for hosting the Derby Stakes, which has come to be widely referred to as The Derby or as the Cazoo Derby for sponsorship reasons, the United Kingdom's premier thoroughbred horse race for three-year-old colts and fillies, over a mile and a half (2400 m). It also hosts the Oaks Stakes (also widely referred to as The Oaks) for three-year-old fillies, and the Coronation Cup for horses aged four years and upwards. All three races are Group 1 races and run over the same course and distance.
The first recorded race was held on the Downs in 1661, although a local burial list of 1625 refers to "William Stanley who in running the race fell from his horse and brake his neck" and in some sources racing is recorded as dating from the 1640s, so it is likely that racing was established much earlier than that. Epsom is referenced in the diary of Samuel Pepys in 1663 and Charles II is said to have been a racegoer there. By 1684, Epsom had a clerk of the course and from 1730 was hosting twice yearly race meetings.en.wikipedia.org