Hmm hard to say but my best guess would be that when the race started it was about 45-50 degrees, I don't think it got much warmer than that thru the race, but I could be wrong. I was cold in my corral, but I had my throw-away jacket which I ditched around mile 2, then I was comfortable thru the race.
However, after the race I was not prepared for how cold you get after that long of a run!! But then, it had started raining and was getting breezy. I really got the chills and took me til we got back to the room and I took a hot shower before I felt normal. Lesson learned - bring a jacket in my bag check!!
I agree with all this. I was NOT prepared for the cold, since the year before had been so warm. I had throw-away arm sleeves, but that was about it. Cold to start, but warmed up quickly. However, the cool-down in the misting rain after finishing was BAD! REALLY wishing I hadn't tossed the arm warmers but tucked them in my waistband or something. Anyway, moral is to be prepared for anything - just in the 2 days before the race the weather changed drastically. Friday I wore shorts and a sleeveless shirt. Saturday I had to wear jeans and a long-sleeve shirt and sometimes put on a light jacket. Bring it all!