24 from 14 nations were the competitors in Hardrock Hundred Mile Endurance Run . Rio Olympic Velodrome (Track),Silverton, Colorado,Riocentro – Pavilion 6 were the venues of Hardrock Hundred Mile Endurance Run . The sport has the official site chicagomarathon.com . 2005 is when Hardrock Hundred Mile Endurance Run was founded  . 11–14 August 2016 was when it was held . 24 (from 5 confederations) were the number of teams who competed in Hardrock Hundred Mile Endurance Run
The sport Hardrock Hundred Mile Endurance Run has less than31 contestants  from 14 nations