Thanks for the response guys (and girls ). My goal is to run the marathon, not run/walk it. Like you were saying runchicrun, right now there is no such thing as an easy run,lol. They are all hard and my goal is just to finish them. I ran my first two 5 milers this weekend and this morning. The first was very very hard, the second was hard but not as bad. I look forward to the days when I can distinguish between a hard run and an easy one.
Thus far my body feels good, but I havent hit any of the really long distances yet either. I will definately try and listen to my body, once I know what it sounds like