I have registered for and will participate in the P.F. Chang's Rock n Roll 1/2 marathon. I will be training and walking with a girlfriend.
My husband and I walked the same 1/2 marathon the first year they had it in Phoenix. We even joined a group to help us train and we could barely function afterwards.
So, wish me luck on this half-hearted training and completing the 1/2 marathon in 4 hours.