I'm not a big fan of running. The last few weeks I've been running with Zombies, Run!. This has made running much more enjoyable.
The story in the game is a great distraction on a short or long run. I run with the zombie chases enabled which adds an extra level of excitement that keeps you on your toes listening for the "Zombies Detected" warning.
For now it is iPhone only, but it is coming to Android soon.