The Bank of America Chicago Marathon registration opens on Feb 1st, 2010 (http://www.chicagomarathon.com/). If you thinking about running this marathon, I suggest you to register for it as soon as possible. They open 45,000 entries, but it will fill up very quickly. Please do not wait. I will be first in line to register for the marathon :-).
See you at Chicago Marathon 2010!!!!