Cliffs Notes: I got a dehyrdation cramp around mile 20, so my marathon ended up sucking horribly, but I still finished.
Long Version: The marathon started at 7:00 with reasonably good weather. Clear skies, no rain, but wind out of the east at 10-20 mph. The wind conditions were a little disappointing because it's been surprisingly still the past couple of days, but that wind is definitely nothing out of the oridnary for this area, so conditions were on the upper end of what one might reasonably have expected.
I had already decided to err on the side of starting too slow, and the Mile 1 marker I was just under 10:00, so that was my cue to speed things up a little, which I did. By the end of Mile 13, I was very pleased with how things were going, as I was running ~9:15. That's slightly slower than my "dream scenario" of 9:09, but still very good for me. I wasn't winded at all and not especially tired. Everything was looking great.
Then trouble began.
Sometime around Mile 16, I started to get some pain in my left knee. I don't have any special knee problems, but this felt a little worse than just your standard ache that goes away after a little while. I slowed down a bit at this point so as not to aggravate it and partly because Miles 16-18 is usually where I start to have a hard time maintaining pace anyway. Since things were going so well otherwise, I didn't think too much of this.
Well, by Mile 18, my knee was starting to feel a bit better, but now I was getting pain in my left hip. Again, I was not overly concerned at first, since I figured this was a result of over-compensating for my left knee. Watch your form, no problem. However, my hip got much worse very quickly. It eventually got to the point where I'm sure I was noticeably limping, and it felt like if I had reached down to touch my hip I would have pulled back a hand covered in blood -- that kind of pain.
So about half a mile or so after the Mile 20 marker, I admitted defeat. I stopped and walked.
This absolutely sucked becaused the one main goal I had for this race was to finish without walking. Granted, this was something outside of my control, but I spent a lot of time training for this race, and I was bitterly disappointed to have to stop at all. I tried doing some walk/run right off the bat, but that didn't help. For about 1/2 mile (or maybe even a full mile; I was distraught at the time and may be getting some details wrong), I could barely walk at all. I was seriously concerned that I wouldn't even be able to walk the last six miles and some scrub would have to come and get me off the course. I was also concerned that I had run for too long on that hip when it was obvious that something was the matter, and that I had seriously injured myself somehow.
Anyway, I resolved to finish this course come hell or high water, so I spent the next several miles doing run/walk, with a heavy empahsis on the "walk" part. Again, this was really depressing because by the time I got to Mile 22 or so, I was starting to get passed by a lot of the same people I had put behind me at the halfway point. Every time I would try to run, though, I couldn't make it more than a couple hundred yards (tops) without getting excruciating hip pain, so there really wasn't much I could do about it.
Finally at about Mile 23, the pain more or less completely went away. I had not been injured at all. Rather, it was just a cramp. I was used to being able to drink as much as I wanted during my long training runs; on my 20-miler, I drank two full bottles of PowerAde (the big bottles, I'm not sure how many ounces) and 1 1/2 12-oz bottles of water. There were aid stations every mile and a half during this race, but they were only handing out water and PowerAde in little 4 oz cups. I know that's designed to prevent hyponatremia, but I was never worried about that in the first place. The combination of walking and double-fisting liquids at a couple consecutive aid stations cleared up the cramp and I was back on my way.
I was able to run almost the entire last three miles, the only two exceptions being one street crossing and the last aid station, where I was very careful to take plenty of fluids.
Final time: ~4:55. (I don't know my chip time yet).
As of yesterday, I was fully expecting to finish this race between 4:15 and 4:20. Just a couple weeks ago I ran my 20-miler in 3:18 IIRC, which I know isn't exactly burning it up but which isn't even remotely indicative of the time I actually clocked here on race day. I thought maybe, if the weather is good, I might be able to flirt with 4:00, and maybe if the weather was bad I might drag my ### across the line at 4:30, but if you had told me that I would not only miss the 4:30 mark but would struggle just to crack five hours, I would have assumed that I must have gotten hurt somewhere in the race, which is of course exactly what happened, but that doesn't make it any better.
On one hand I am not inconsolable about this race. I did finish, and my incredibly poor performance was due to something that I had never had any problems with before and which was largely outside of my control. I could have done a better job of hydration earlier in the race, and if I had had more experience, perhaps I would have known that. Still, I had never any issue with hip/leg cramps ever on any run of any distance, so of course it figures that they would flare up for the first time during the one race I've been training religiously for for months. But still, at least I can cross "Run a Marathon" off the List Of Things I Want To Do Before I Die, so that's cool.
Still, it's very disappointing to finish so slowly when I'm 100% confident that I could have turned in at least a 25 minute better time. But I got my shirt, I got my finisher's medal, and my wife PRed in the Half, so there will be many beers consumed in the Karamazov household today.