Endurance

Yes You Can: Run a 10K

You know the drill. Starting January 1, coworkers will start to complain about their holiday health transgressions. They’ll swear by a fitness-inspired New Year’s resolution, and...

Obstacle Force

When Utah runner Hobie Call received an e-mail from a friend telling him to check out a series called Spartan Races, he clicked on the link to the races, saw an image of a mud-spattered girl...

Adventure Races

Hauling logs, hurdling fire pits: the obstacles can be as painful as they are unpredictable. Still, an estimated 800,000 people tested their mettle in adventure races last year, and there are...

Critical Mass

Funky Monkey. Sweati Yeti. Ball Shrinker. Death March. The only thing more impressive than the names of the obstacles in the Tough Mudder racing series are the number of...

Multisport Tracker

The Endomondo Sports Tracker Pro keeps tabs on any activity that covers distance—that is, everything you do outdoors. Skiing: check your ­elevation up top and measure...

Hot Tip: Workout in Hot Weather

A study in the Journal of Applied Physiology found that cyclists who worked out in a 100-degree room for ten days experienced a 5 to 10 percent improvement when they later competed in 55-­...

The Mutants Next Door: Fittest Real Athletes

They're obliterating records when they're not ferrying the kids to soccer or logging 40-hour weeks selling insurance. Meet five working athletes at the top of their game—and learn their...

G.I. Joe and The House of Pain

THE PILL IS SMALL, PURPLE, CYLINDRICAL—ABOUT THE SIZE AND OMINOUSNESS OF A .38-CALIBER BULLET. I haven't known Robert Kenefick ten minutes when he hands me a rubber glove...

Plans of Attack

Before you beginHOW HARD SHOULD YOU GO?PERCEIVED EXERTION (PE): 1 2 3 4 5 6 7 8 9 101: not remotely challenging;5:

Get Real

THE BIG IDEA: Set fitness goals that are in line with your time constraints.WHY: You won't get into ultra-endurance shape if you don't have time to log...

Fast and Furious

GO HARDTHE BIG IDEA: High-intensity intervals force your body to adjust quickly.WHY: Your body adapts when it's pushed to the limit....

Shorter. Harder. Smarter.

LAST WINTER, half a year before the Leadville Trail 100 mountain-bike race, Dave Wiens knew he had his work cut out for him. After winning the event six times in a row, from...

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