Slightly obsessed with tracking your workouts? Grab your iPhone and discover the wonderful world of free running apps. The built-in GPS allows you to track your run no matter where you are: on trails, busy neighborhoods, or dirt roads. Whether you want an actual Google Map of your route, a calendar showing off the days you worked out,

or to share your workouts with your pals on Facebook or Twitter – there’s an app for that. If you’re new to the running app scene, here are six free iPhone apps you’ll want to check out. Source: Thinkstock View Slideshow ›

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Don’t Assume Your Mileage: Free iPhone Apps For Runners