3 Reasons To Run A 5-K

Whether you're an eager newbie or a serial marathoner, there are loads of reasons to register for a 5-K.

"If you're a beginner, targeting the distance is a great way to gain motivation and build structure into your schedule," says Luke Humphrey, M.S., an exercise physiologist and head coach for Hanson's Coaching Services in Rochester Hills, Michigan. "For regular runners, the 5-K stokes your competitive spirit, breaks up the monotony of high-mileage training, and serves as a solid test of speed." In fact, all runners can improve their fitness—and maybe even their PRs—when training for a 5-K, says Humphrey. Here's what keeping it short and sweet can do for you.

Get Going: Try these exclusive 5- and 10-K Runner's World training plans for novice, intermediate and advanced runners. More...Yahoohealth.com