Runner's World

The Pill Problem - The right drug can relieve pain and discomfort—or put you in a world of hurt.

Flight of the Bumble Bee - Why would anyone run all night through some of the West’s most rugged mountains just to help some other guy finish a completely ridiculous race? Christie Aschwanden went to the Wasatch Front 100-mile ultramarathon to find out.

Winter Warnings - As the mercury drops, avoid the big chill.

Natural Selection - What kind of runner are you? Were you born to run a fast 5-K, a strong marathon, or something in between? Here's how to find out—and how to realize your full potential.

Fresh Thinking - A close look at four different "food types" and how these nutritional choices help fuel a runner's diet. Featuring profiles and personal recipes from four elite runners: the Gourmand, Deena Kastor, the Vegetarian/Vegan, Scott Jurek, the Organic/localvore, Carrie Tollefson, and the Omnivore, Nick Symmonds.

Age Matters - Are you too old—or too young—to run your best marathon? To find out, we asked top scientists, coaches, and elite athletes about the impact of aging on endurance. Their answers might pleasantly surprise you.

Eat More, Weigh Less And run better. - Yes, you can do all three. Here's how