I just recently picked up running again and I want to show you a grand app for keeping up the running spirit. It's called Zombies, Run! and it makes running into a game. You're playing as Runner 5 and your mission is to collect supplies and check out the surroundings of this post apocalyptic world, and while your running you will get directives and hear more about the world and why it's now zombie infested (the story is really good actually). AND best of all... you will get chased by hungry zombies! BRAAAAIIINS!