Race weekend is just around the corner .
What you 're holding in your hand -- the 2013 Bank of America Chicago Marathon Participant Guide -- includes all the key information you need to know to be prepared for a great race on October 13 .
Race weekend is just around the corner and what you 're holding in your hand -- the 2013 Bank of America Chicago Marathon Participant Guide -- includes all the key information you need to know to be prepared for a great race on October 13 .