performance nutrition

How Many Calories Does Running Burn?

By Kelly O'Mara | March 2, 2015

Figuring out the answer involves a fairly straightforward calculation, but the overall equation is not as simple as it seems.

By Mario Fraioli | November 13, 2014

Is having your own drink worth the hassle of carrying a bottle the whole race?

By Nicki Miller | November 7, 2014

We asked an elite runner, a nutritionist and a coach how they fuel for 26.2.

By Jason Devaney | October 10, 2014

The Boulder, Colo., company specializes in providing custom nutrition boxes for endurance athletes.

By Mario Fraioli | September 11, 2014

Being a vegetarian doesn't mean you can't get the necessary protein your body needs.

By Kevin Beck | September 5, 2014

Take these steps to avoid a very unnecessary and uncomfortable situation.

By Duncan Larkin | September 4, 2014

Take these top tips to heart heading into your next ultra.

By Matt Fitzgerald | September 4, 2014

Think twice before you "starve" yourself during and after workouts.

By Mario Fraioli | September 2, 2014

Staying on top of your hydration in the heat and humidity can be tricky, so keep these key points in mind.

By Mario Fraioli | August 27, 2014

The two-time Western States champion recently released his first book, Hal Koerner's Field Guide To Ultrarunning.