The 2015 Breeders' Cup World Championships was the 32nd edition of the thoroughbred horse racing season-ending premier event held on October 30 and 31 at Keeneland in Lexington, Kentucky. The race series, held for the first time at Keeneland, required a significant amount of preparation to transform the small, historic track into a venue capable of handling large crowds, comprising 13 championship races held over a two-day period.