The venue for Hardrock Hundred Mile Endurance Run was Silverton, Colorado,Olympic Indoor Hall (artistic and trampoline) . 6 events were there in Hardrock Hundred Mile Endurance Run . It was held in 2 August . The sport has the official site chicagomarathon.com . 1884; 135 years ago (1884) is when Hardrock Hundred Mile Endurance Run was established 
Olympic Indoor Hall (artistic and trampoline) was the official place where Hardrock Hundred Mile Endurance Run happened