Do you get injured as you increase your mileage? Find out how to build a base safely without...

By Jason R. Karp, Ph.D.

Know these 10 tricks before you go to the marathon starting line.

By Jason R. Karp, Ph.D.

Got spring running fever? Don't run out the door without first checking out our editors' pic...

By Jason R. Karp, Ph.D.

Have a layover between flights? Here's how to get fit while waiting to board the plane.

By Jason R. Karp, Ph.D.

Want to get dirty? Get a sneak peak at the top spring mud runs in the U.S.

By Jason R. Karp, Ph.D.

If you're new to running, don't hit the road or trail without these must-have items.

By Jason R. Karp, Ph.D.

Bored during your layover? Try one of these airport health clubs to stay in shape between fl...

By Jason R. Karp, Ph.D.

If you're tired of running the same race every year, try these nine new races in 2015.

By Jason R. Karp, Ph.D.

Go on vacation and run a race at these exotic locations.

By Jason R. Karp, Ph.D.

Whether you run for speed or for fun, check out these popular 5K races in 2015.

By Jason R. Karp, Ph.D.