There is not much I can add Tom, except for the fact that I am very proud of you, not just as a runner and soon to be marathoner, but as a man of integrity and of God, as witnessed by all of us here, each time we read your posts. Good luck Tom.
Mark
PS Tom, after I ran my first marathon in Portland, my wife and I did not stay that evening, and like you drove back home. It was one of the most joyful, yet painful drives I have ever taken in a car! I suggest you pick yourself up some 'alleve' and have some bags of ice for the trip home. Have fun.