Newmarket, England was twinned with Lexington in 2003. Newmarket is known as the birthplace of thoroughbred horse racing. There are two racecourses in the town: the July Course and the Rowley Mile. In addition, Newmarket is also home to the Jockey Club, the British Racing School, the National Stud, Tattersalls Horse Auction Pavilion, and the National Horse Racing Museum.
Each summer ten students from Lexington visit Newmarket, England and spend time with their counterparts. Students from Newmarket come to Lexington in October.