Is Walking A Form Of Cheating? or Is Walking A Need?

Ok, I agree, the word Cheating sounds rough. I titled it like this after a chat with my dad yesterday afternoon. He went out to do his very first 13 miler yesterday morning. I mapped the route for him two nights before. The map showed a 13.12 mile run but when he ran it, it only recorded 12.75 on his Nike+ in 2:03hrs.

Now, what does all of this have to do with walking? Well when I got back from running and I got to sit down and relax after freaking out over my horrible new shiny blood blister on my right foot. LOL yes.. Ewwww too..  My dad and I were talking about his run. He was bragging about him running non stop, but that came to an end when I told him that I ran 13.7 in 2:02 hr.. I explained to him that after mile 3 I made quick stops every 2 miles to get a bit of gatorade. He started laughing and said.. "ohhh that's cheating" you can't say that you ran that long when you walked part of the run.