For starters, check the horses in the Parade Ring. Horses are like humans and their demeanour can often give away clues as to how they might perform. Though it's far from an exact science, a horse who has a bright coat, an alert look, is not overly sweated up and is walking calmly is more likely to be successful than a horse who shows the opposite.
Click on the play button to the left to watch our 'How to pick a winner' video. Here our 2016 Racecourse Ambassador, and Champion Apprentice Jockey, Tom Marquand, takes you through what you should be looking for when picking out a winner in the Parade Ring.