Endomondo is a fitness freak's best friend
If you're the active type, odds are good that you've already heard of Endomondo, the app which can keep tabs on how far you've ran, walked, or biked, through the device accelerometer and GPS.
That data is then plunked into a graph so you can see how your workout regimen is progressing over time. You can set up audio alerts to let you know when you've reached certain distance milestones, plus Endomondo is highly social; get encouraging notes from friends, post workouts to your Facebook timeline, and test your time on local routes against reigning champions.
Endomondo is bound to enhance the routine of any runners out there.