I'm caught between two groups, I'm hoping for a 1:38. I think that if I start with the 1:45 group, I won't make the time up later on; and if I go with the 1:30 group, I will end up paying for it later in the run. guess I'll just have to pace myself, not that you're ever alone when there are 33k+ other runners. I have already run this a few times so at least I know the course.
Newcomers watch out for the long drag from about 10.5 to just under 12 miles, it's a bit of a killer if you've gone a bit fast early on.