The 2013 Epsom Derby (known as the Investec Derby for sponsorship reasons) was the 234th annual running of the Derby horse race. It took place at Epsom Downs Racecourse on 1 June 2013.The race was won by Ruler of the World, at odds of 7/1 ridden by jockey Ryan Moore. The winner gave Aidan O'Brien his fourth success and was the first horse since Shergar to win both the Chester Vase and the Derby. The favourite Dawn Approach finished last of the twelve runners.