Barney: Training for a marathon. [scoffs]
Marshall: What?
Barney: You don't need to train for a marathon. You just run it.
Lily: You're kidding, right?
Barney: Not at all. I could run a marathon anytime I wanted to.
Marshall: So like tomorrow, you think you could wake up, roll out of bed, and just run the New York City Marathon?
Barney: Absolutely.
Robin: Barney, we're talking about 42 kilometers.
Ted: Thanks, Canada. I'll take it from here. Barney, it's like 26 miles.
Barney: Here's how you run a marathon. Step one, you start running. There is no step two.

Robin: Wow. Look at his time. It's pretty impressive.
Marshall: He's gotta be cheating, okay. He knew we'd check.
Ted: Yeah, he'll do anything to win a bet. Remember that time he bet me that Men at Work sang "Hungry Like the Wolf," and when he found out that they didn't, he tried to hire them to?

Marshall: 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.
Barney: 50 bucks? Gee, Grandpa, if I win, maybe I can buy myself an ice-cream cone. Make it $10,000.
Marshall: You have a gambling problem, you'll bet me $50.
Barney: Fine, then no bet. Okay, $50.