Runnymede Farm is an American horse breeding farm located outside Paris, Kentucky on U.S. Route 27, the Paris-Cynthiana Road. Breeders of Thoroughbreds, the 365-acre (1.48 km2) farm was established in 1867 by American Civil War Colonels Ezekiel Field Clay and Catesby Woodford. Colonel Ezekiel Clay (1840–1920), whose father, Brutus J. Clay, was a member of the Kentucky House of Representatives and the United States House of Representatives and a breeder of Thoroughbreds and champion cattle. He was a nephew of abolitionist Cassius Clay and a cousin to Henry Clay.