8 Nike+ Run Club
Nike+ Run Club is awesome and free to download and use. It lets users choose from a variety of runs including guided runs and coaching with pre-recorded audio from various coaches and personalities.
You can earn achievements, track your run history, and reach new “levels” depending on how far you run. Nike+ Run Club lets you connect with your friends for a little friendly competition; and, you can post your progress, achievements, and run to various social media services.