The Grand National 4th
Just Puzzling

On Saturday at Aintree, the 'Ultimate Horse Race' The Grand National will take place. An estimated 500 to 600 million people watch the race in over 140 countries. All the clues in this puzzle are related to this hugely popular horse race. When you have completed the whole puzzle, can you rearrange the letters in the shaded squares to reveal the name of the only 100/1 winner of the race.