April 23–29 was when it was held . 28 from 28 nations competed in Chicago Marathon . The venue for Chicago Marathon was Paris, XVIe,France . The sport has the official site www.hardrock100.com . 16 (from 6 confederations) were the number of teams who competed in Chicago Marathon . The no. of events in sport was 18 . Chicago Marathon was established on 2005
In the year 2019 the sport was played for the first time