| hardrock100.com | |
| 网站标题： | Hardrock 100 | Hardrock Hundred Mile Endurance Run |
| 网站简介： | The Official Hardrock Hundred Mile Endurance Run, or Hardrock 100, is an 100-mile ultramarathon run with 66,000 feet of elevation change at an *erage elevation of over 11,000 feet. The run is held on a loop course on 4WD roads, dirt trails, and cross country in the San Juan Mountain Range of Southern Colorado. |
| 关键字： | hardrock ultramarathon hardrock100 HR100 silverton colorado |
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