It was held in 2 August . Silverton, Colorado,Olympic Indoor Hall (artistic and trampoline) were the venues of Hardrock Hundred Mile Endurance Run . 1884; 135 years ago (1884) is when Hardrock Hundred Mile Endurance Run was established  . 6 events were there in Hardrock Hundred Mile Endurance Run . The official site of Hardrock Hundred Mile Endurance Run is chicagomarathon.com
Hardrock Hundred Mile Endurance Run event has celebrated it's  Ruby jubilee on 1935