Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members! Download the app.
If a 1,000-mile run doesn’t sound hard enough, try the Iditasport Impossible: This ultramarathon covers Alaska’s Iditarod Trail from Anchorage to Nome–in winter. Boulderite Jorge Rufat-Latre completed the feat this year; here, he talks motivation, mental toughness, and eating pounds of chocolate-covered cookies.