I am fascinated with the idea of doing MR's. Spent a lot of yesterday reading up on Millage Runs and the different routings that people take. I am currently a GM on United, and don't really want to get to any status level with them (Premier would be nice), but thinking about doing a MR over a weekend for fun (am I crazy for wanting to do a MR for fun?). I am in Chicago so I would be flying out of ORD, and want to do this all on United. I was intrigued with the idea of flying out Saturday morning, and taking a red-eye back Saturday night, putting me in around 1 am on Sunday, so I accomplish the Saturday stay-over, but don't have to stay the night anywhere.

Any suggestions on routing in and out of ORD without needed to spend the night anywhere?

Thanks for the help.