Barney, we're talking about 42 kilometers. Thanks, Canada. I'll take it from here. Barney, it's like 26 miles. Here's how you run a marathon. Step one, you start running. There is no step two. Okay, you know what? Prove it. Take my number and run in my place. I will bet you 50 bucks you don't even finish the race. 50 bucks? Gee, Grandpa, if I win, maybe I can buy myself an ice-cream cone. Make it $10,000. You have a gambling problem. You'll bet me 50. Fine, then no bet. Okay, $50. The next morning, as the marathon began, we were focused on Marshall's computer. Each runner gets a tracking chip so you can follow them online, see when they pass certain checkpoints. Barney's got mine in his shoe. Ooh, he's starting! This ought to be good.