17 were the number of teams who competed in Hardrock Hundred Mile Endurance Run . 1963 is when Hardrock Hundred Mile Endurance Run was established  . 11 August – 28 August was when it was held . The venue for Hardrock Hundred Mile Endurance Run was Riocentro – Pavilion 6 . The official site of Hardrock Hundred Mile Endurance Run is chicagomarathon.com . 136 from 25 nations competed in Hardrock Hundred Mile Endurance Run
Hardrock Hundred Mile Endurance Run was a single day event