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Has been described as the world's toughest endurance race, covering not merely the implied 100 horizontal miles but also a great deal of elevation change, frequently including an ascent of 14,000-foot Handies Peak. Silverton is the starting point for this race, which is held in mid-July. If you're planning to run in it, register early, as participation is on a lottery basis, and arrange accommodations early as well.
An unusual alpine skiing area that caters specifically to the expert skier, and has already developed a reputation as a good place for black-diamond skiing. The facility is small, with a single chair lift that services a number of very difficult runs. Mountain biking is possible during the summer.