Coach Jenny Talks about Nerves

As for those nerves? They're great for running, says Jenny Hadfield, a Chicago-based marathoner and coach who will be speaking in Calgary to talk about her own struggles with running and offer a few tips to get marathoners through their race.

"I'm always concerned when I talk to a first-timer who isn't nervous because that means they don't understand the magnitude of what they are about to do. Nerves are good. You can harness that nervous energy to help get you to the end."