I'm looking for some half marathons with reasonably competitive fields for the April/May time frame. I am located in the midwest (Chicago). I have run the Indy Mini Marathon each of the past two years, but I have a potential conflict with Indy this year. I have run low-1:08 and am hoping to run in the 1:07-mid range, so I'm looking for races that might have a group of guys in that range. Anyone have any good suggestions?