All the details of the grey runners who will be taking part in the Grand National at Aintree. Grand National a horse -by- horse betting guide. The Last Samuri, second last year, heads the field for the world's most famous race at. With 40 horses to choose from, picking a winner on Grand National day is anything but easy. To make it easier we'll be providing you with the betting for the 40. That race came after the weights were set for this and he would have an extra 10lb if the handicapper was allowed to take that run into account. Just touched off at the Cheltenham Festival in March. Measureofmydreams has fallen at the Chair. Loading comments… Trouble loading? A drier surface would help. Full Terms and Conditions for the free bet offers can be found on the Betfair and Paddy Power websites - please spiel rechnen them before you signing up with a bookmaker.