The Hardrock Hundred Mile Endurance Run is an ultramarathon of 100.5 miles in length, plus 33,050 feet of climb and 33,050 feet of descent for a total elevation change of 66,100 feet, at an average elevation of over 11,000 feet. The run is held on a loop course on 4WD roads, dirt trails, and cross country in Southern Colorado's San Juan Range, USA.
How to enter the Hardrock 100
- Run 100mi
Hardrock 100 route
The course is closed. That means that runners are required to follow the specified route.
Four legs, linking the Lake City, Ouray, Telluride, and Silverton areas. The finish is in Silverton, the same location as the start. The course is 100 miles long, has a cumulative vertical gain of 33,050 feet of climb and 33,050 feet of descent for a total elevation change of 66,100 feet, and takes place at an average elevation of about 11,000 feet. The high point is 14,048 feet.
This is a test of runners against the mountains. The course is on trails as much as possible. There are 15 aid stations; major aid stations will be located in the towns with less well-equipped aid stations in between. Runners are expected to be largely self-supporting between the towns.
This is not an orienteering event. We intend that you be able to concentrate primarily on running. However, remoteness, weather, animals, and people problems on the course make this problematic at best. We will mark the entire course before the run. However, long road sections and maintained trails may not be marked at all. Cross-country sections will be marked more intensely. We shall continue our trend over the past few years of less intense course marking with fewer flags along all course sections. The flags should be readily visible, even to those with red/green color blindness. The markers have reflective tags for night visibility. On some portions of the route we may place colored engineer tape. Chalk may be used to mark other sections, particularly roads in towns. Runners are responsible for knowing the prescribed course and following it whether or not markers are present.
The altitude range of this run (7,700 to 14,000+ feet) takes the runner through several climate zones. At the lower altitude, forests of aspen, pine, and spruce are common. Timberline is locally at about 11,800 feet, though this can vary greatly. Above timberline is alpine tundra and low vegetation interspersed with krummholz (low, stunted spruce, fir, and willow).
In the summer, animal life is abundant. You will almost certainly see elk in the high meadows, possibly with their young. Stay clear of elk: they can be ornery at times. Bears (black, not grizzlies) are present, though seldom seen. Mountain lions may also be encountered.
The run is a salute to the toughness and perseverance of the hardrock miners who lived and worked in the area.
Hardrock 100 weather forecast
Rain in the afternoon and evening.
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