Newmarket is a market town in the English county of Suffolk, approximately 65 miles (105 kilometres) north of London, which has grown and become famous because of its connection with race horses and Thoroughbred horse racing at Newmarket Racecourse. It is the largest racehorse training centre in Britain, and home to several horseracing institutions. Nine of the UK's 31 Group 1 flat races are held at Newmarket, the same number as at Ascot Racecourse.