.  Any suggestions for the best running app for head to head challenges and encouragement with a buddy across the state? We both run with iPhones for music, but use other devices for speed, distance, etc (a Polar RX000 and Timex GPS, respectively). I would prefer to not use Facebook, but will if I have no choice.  Instant notifications of runs and and real time encouragement would be a huge plus. I might even get out of bed and run if I know my buddy just started his run?  If you're using RunKeeper on Android, just use a music player (PowerAMP/Spotify?) that has lockscreen controls. Then you don't have to dig through anything to change tracks. Just turn on the screen and hit the button.  I