He also wins the Grand National , one of Britain 's most famous horse races . The O'Neill - trained Sunnyhill ##er finishes second ; Seabass , ridden by Katie Walsh is third . Cheltenham Gold Cup : McCoy eventually remounted and started the race , but Synchronised - who was bidding to become the first horse since Golden Miller in 1934 to win the Gold Cup and the Grand National in the same season -- fell at the sixth fence and subsequently had to be put down . Synchronised a faller early in race and later put down .
He also wins the Grand National , one of Britain 's most famous horse races . The O'Neill - trained Sunnyhill ##er finishes second ; Seabass , ridden by Katie Walsh is third . Cheltenham Gold Cup : Synchronised a faller early in race and later put down .