The sport has the official site chicagomarathon.com . 24 from 14 nations were the competitors in Hardrock Hundred Mile Endurance Run . Hardrock Hundred Mile Endurance Run was founded on 2005 . The venue for Hardrock Hundred Mile Endurance Run was Rio Olympic Velodrome (Track),Silverton, Colorado,Riocentro – Pavilion 6 . 24 (from 5 confederations) were the number of teams who competed in Hardrock Hundred Mile Endurance Run . 11–14 August 2016 was when it was held
The sport Hardrock Hundred Mile Endurance Run had less than 44 contenders 