Endurance

Myth #6: Dehydration hurts ­performance

“Thirst is an exquisitely finely tuned indicator of your body’s actual hydration status,” Dr. Winger says. “Listen to it.”

Monkey Bars

Yes You Can: Run a Tough Mudder

Welcome to the frozen, on fire, wet, barb-wired world of Tough Mudder—where adventure racing starts to look a lot more like hazing

Peak Performance

2. Peak Performance

Outside picks the best running blogs of 2011, including Amby's Burfoot's Peak Performance blog at Runner's World

Precooling

The Pre-Workout Cooling Routine

Learn how to control your body temperature and boost performance with a pre-workout routine American Cyclist Peter Stetina swears by.

Birkebeiner

Yes You Can: Ski the Birkebeiner

With temperatures below zero, more than 4,500 feet of climbing, and 9,400 competitors, Wisconsin’s American Birkebeiner is the largest and one of the toughest cross-country ski races in the United...

Birkebeiner

The Birkie Dozen

Cross-country skiers share the 12 secrets of a successful Birkebeiner race

Training Plan by Bill Pierce

Birkebeiner Training Plan

Coach Bill Pierce's 16-week plan to prepare you for America's biggest cross-country ski race

12-Week 10K Training Plan

10K Training Plan

Our 12-week program will prepare you to run a personal best

Yes You Can: Run a 10K

Start training now and destroy your office mates in a New Year’s Day 10K.

Hobie Call

Obstacle Force

When 34-year-old Hobie Call lost the Death Race this past August, he also lost his chance to win $100,000 for sweeping the Spartan Races. So why does he keep competing?

Kiss of Mud

Critical Mass

Americans are lining up for marathons, triathlons, and adventure races in record numbers. Here are 15 of the nation's premier races and the best reason to enter each one.

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