Hundreds of millions of pounds will change hands between bookmakers and punters at Cheltenham this week. Some of us will win, plenty of us will lose, and once in a blue moon, one of us will defy astronomical odds and turn a piddly bet into a life-changing sum of money.

Scroll through to see our run-down of the biggest and most unlikely winning bets in racing history and check the latest Cheltenham odds with Betfred by clicking here.