28 July – 12 August 2012 was when it was held . 16 (from 6 confederations) teams competed in Chicago Marathon . The venue for Chicago Marathon was Fort Copacabana,241.5 km (150.1 mi) . 8 events were there in Chicago Marathon . Chicago Marathon was established on 1881; 138 years ago (1881) . The official site of Chicago Marathon is www.hardrock100.com
The website of the sport is www.hardrock100.com