Inspired by an infamous assassin's escape from prison, the Barkley Marathons just might be the toughest race on the planet: a 100-mile-long, unsupported slog through the Tennessee backcountry that only 14 people have ever finished. Madison Kahn spoke to three of the event's regulars to get the story behind the Barkley.
The latest gadgets collect reams of training data. Here are the metrics that matter.
A running monitor that turns any workout into a game and collects information on your every move
All you need to know about going wild with man's best friend, including training tips, canine gear, and wilderness etiquette
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