Posted: 29/09/2013 at 22:10
I did it a few years ago, and loved it.
Yes, very early start, and it was blinkin' freezing when I did it. However, more recently it was abandoned dur to the heat -- so expect the unexpected!
Chicago is a fab city. Make sure you manage to spend a few days doing tourist stuff e.g. sampling th emany excellent beers, and visiting one or two of the famous blues and R'n'B clubs. Chicago is famous for its pizzas, though personally I'm not keen on the Chicago pizza-pie style The Cheesecake Factory is unmissable (but post-race only).
Chicago is one of the world's great marathons. Be thankful you're taking part, and enjoy one of America's most under-estimated cities.