The world's most famous steeplechase is less than 48 hours away.
A staggering two-thirds of us are expected to have a bet on the Grand National this Saturday.
The race meeting started today and our sports reporter David Chisnall has been among the crowds.
Grand National bets may top £150 million
Animal welfare campaigners will gather outside Aintree racecourse, calling for the Grand National to be banned on the grounds of cruelty.
Your guide to all the runners in the John Smith's Grand National at Aintree.