Hardrock Hundred Mile Endurance Run was established on 1977 . The venue for Hardrock Hundred Mile Endurance Run was Stade Roland Garros (since 1928) . The sport has the official site chicagomarathon.com . 16 from 8 nations competed in Hardrock Hundred Mile Endurance Run . The no. of events in sport was 6 . It was held in late October or early November . 12 (from 4 confederations) teams participated in Hardrock Hundred Mile Endurance Run
The sport Hardrock Hundred Mile Endurance Run has less than27 contenders  from 8 nations