So I will be running the Chicago Marathon this fall, and I will be hoping to run sub 3, maybe down to around 2:55. It will be my first marathon, and I ran my first half in May and ran around 1:22 flat. The cutoff for the "A" corral is sub 1:20.
My question is whether I will be ok running 6:50ish pace at the start from Corral B. Anyone in this position before?