I've just taken up running a few months ago, and recently found a really cool app to keep me motivated! It's called "Zombies, run!", and it's like a podcast/game for your smartphone. The general idea is that you're a runner in this post-apocalyptic world trying to escape, well, zombies. It tracks your runs using gsp and registers your average speed etc. I like it very much, and have found it helps me stay motivated! And hearing the moans of the zombies right behind me even makes me run faster, hehe.
Anyone else here already using the app? I have the android version, which from what I understand is a little bit behind on the iPhone app.