Runkeeper
Sunday’s 7k was my first race using Runkeeper for the iPhone. I am currently using the free version which I like a lot better than using the Nike+ (which I’m not using anymore) as it utilizes the iPhone’s GPS and can map your run on Google Maps (which has been very accurate for me). For my workout runs, I have been using Runkeeper along with a Polar watch which I use to track my heartrate (which neither the Nike+ or Runkeeper/iPhone can do).