Zeke, I've thought quite a bit the Chicago experience & wonder what I would do in that situation.
Part of me would think back to Grandma's a year ago & remember what a miserable experience that was & pass on Chicago.
Then, another part of me would have a really tough time not lining up at the start. The eternal optimist saying it won't be that bad, look at all the others running.
Then regretting that decision at mile 13. 🙁