PUNTERS are placing bets on their favourite horses ahead of the Grand Nation at Aintree tomorrow. Here is a full list of runners and riders. With 40 horses to choose from, picking a winner on Grand National day is To make it easier we'll be providing you with the betting for the 40 runners set to. Trainer is in a select club to have won the Champion Hurdle, Cheltenham Gold Cup and Grand National. Triumphed at Aintree with Mr Frisk in.