Running App

I Use Nike + although I have noticed its turned all my distances into miles, i prefer working with kilometers, and i dont know how to change it back

Very happy with Runkeeper.

Runkeeper is my current fave, but Strava seems like an interesting new app with its new Segments racing feature:

http://blog.outrunyou.com/2012/10/31/nike-plus-runkeeper-strava-mapmyrun-running-app-review/