1977 is when Hardrock Hundred Mile Endurance Run was founded  . The sport has the official site city2surf.com.au . 18 events were there in Hardrock Hundred Mile Endurance Run . 7–17 August 2016 was when it was held . 12 were the number of teams who competed in Hardrock Hundred Mile Endurance Run . 275 from 48 nations were the competitors in Hardrock Hundred Mile Endurance Run . The venue for Hardrock Hundred Mile Endurance Run was Silverton, Colorado,Field
Carioca Arena 2 was the official place where Hardrock Hundred Mile Endurance Run happened