Here it is, 7:30! The moment you've been waiting for: Marathon Eve.
Let's make no mistake. You are in sub-3 shape right now. How far under? I don't know, but you're definitely there. It is the wind that is the unknown at this point, not your fitness.
Running in the wind is a little like running in the hills, and, since you're running what is an irregularly shaped loop, you will get a reasonable portion of it back. If you're really lucky, the wind could actually help you or negate itself by picking up for you when it's at your back.
Your plan to go out in 1:29 for the half is a gutsy one, and you have my full support on that. If you find that the wind is relentless and unforgiving and you are struggling a little, adjusting to 1:31-1:32 won't put you out of range for one tasty, wind-swept sub-3.
DON'T be discouraged if you need to take additional time to work your way through the wind on that first half. It's better to conserve your energy if you need to. Remember, if that 25MPH wind is at your back on the home stretch, as the weather forecast predicts, then you will literally be flying home.
And now, without further adieu, I will give you my greatest piece of wisdom. The marathon is tough and grueling, and it will conquer your mind well before it conquers your legs -- IF you let it. After that first half, you will begin to see people bail out of the race, drop off their pace, or even walk. Your mind will tell you that you would like to join them. It would be so easy to give your legs a break. Don't do it!
When the going gets tough, focus on pushing your feet into the ground to propel yourself forward. It takes a lot more focus near the end of the race, and feels substantially more painful, but your legs will have a lot more left in them than they will admit openly to.
When you reach the point where the going gets really, really tough, near the last several miles of the race, then take a "snapshot" of the mental and physical anguish that you are experiencing at that moment. Tell yourself "it does not have to get any more painful than this, but I will not let it get any LESS painful than this."
With that in mind, you may slow down to some degree or you may not. You may even speed up. The point is that you have made a commitment to maintain that level of discomfort till the bitter end. You know you can handle that level of discomfort because you already ARE handling that level of discomfort. THAT is the key to final stages of the marathon.
You've done the work, 7:30, and now is the time to reap the rewards of everything that you have put into this endeavor. Keep yourself loose and relaxed and shake those arms out every mile or so. Smile for the camera and high-five a fan or two! This is the culmination of months of effort, so allow yourself to enjoy the experience. There will be pain, for certain, but there will also be joy and the relief of knowing that you have done your best.
Good luck to you tomorrow, 7:30! I hope that we can change your handle tomorrow, though. 6:50 sounds right to me. :)
Sincerely,
Toadlips
PS - From the moment you get up, sit on the toilet. Every time you pass a porta-potty, sit on the toilet. Get everything out before that gun goes off!! :)