Will your trail running performance suffer if you don't train your core? Discover the core- ...

By Sabrina Grotewold

Build power and prep your body for the rigors of speedwork, racing and tackling uneven terra...

By Jason Karp

Conquer the uphills and downhills so frequently found on trails with these six tips from run...

By Jason Karp, Ph.D.

Complete the same workouts on the same routes every week can lead to burnout. Coach Pete Rea...

By Pete Rea

Want to run stronger for longer? Learn the science behind metabolism to understand how to ad...

By Jason Karp, Ph.D.

These workouts combine a variety of running techniques to help you increase your fitness and...

By Alex Hutchinson

From lifting groceries to running on uneven surface, balance is used daily. Learn about the ...

By Leila Harper

Take to the hills for a strength-boosting, endurance-testing, enjoyable workout.

By Jeff Galloway

Sculpt stubborn ab muscles with the help of a stability ball. Do these four moves thrice wee...

By Caitlin Carlson

Hope to run your first or best half marathon? Both beginners and experienced distance runner...

By Jeff Gaudette