It was held in April 23–29 . 28 from 28 nations were the competitors in Chicago Marathon . 16 (from 6 confederations) teams participated in Chicago Marathon . Paris, XVIe,France were the venues of Chicago Marathon . Chicago Marathon was established on 2005 . 18 events were there in Chicago Marathon . The official site of Chicago Marathon is www.hardrock100.com
Chicago Marathon will celebrate it's  Centennial jubilee on 2105