Worth Traveling For: The World's Top 10 Running Races

For some people, vacations are meant for chillin' out, relaxing on beachy verandas and maximizing the pampering. But if you have spring fever and have bigger goals of counteracting your hedonism with a big physical challenge, it might be time for a trip you need to train for. Whether you're an ardent runner or an occasional plodder, we've found ten events worth every heartbeat you'll spend on said vacation. Here's to your health.