I guess I should explain the training program that I am using.
I will be using Hal Higdon's Novice I marathon training. It is an 18 week program that will take me to the day of the marathon, October 18th.
http://www.halhigdon.com/marathon/Mar00novice.htm
I followed his half marathon training and had success both times I used it. I hope to have the same success with the marathon training as well.