Considering it's 26.2 miles long and will have 35,000 people pounding along it, it's going to be hard not to fall across the marathon tomorrow. But the secret to having an enjoyable marathon spectator experience is to avoid the ultra-crowded bits, and work out how you're going to see your mate who's running (it's trickier than it looks - spotting a man in a vest amongst 35,000 people can be challenging). You need A Plan.
