The sport has the official site chicagomarathon.com . It was held in 11–14 August 2016 . Rio Olympic Velodrome (Track),Silverton, Colorado,Riocentro – Pavilion 6 were the venues of Hardrock Hundred Mile Endurance Run . 2005 is when Hardrock Hundred Mile Endurance Run was founded  . 24 from 14 nations competed in Hardrock Hundred Mile Endurance Run . 24 (from 5 confederations) teams participated in Hardrock Hundred Mile Endurance Run
Hardrock Hundred Mile Endurance Run will celebrate it's  Silver jubilee on 2030