Not far from the town of Mackay, Lost River Peak is part of the Lost River Range. The mountain can be climbed beginning in mid-May, but it's easier to climb and thus most popular during the late summer months. There is a campsite at the nearby Mackay Reservoir and camping is also permitted at the trailhead, where water is available in the spring and early summer. There are no fees to access the area, but visitors will have to pass through private property on the way to the trailhead and are asked to leave all gates on the road as they were found.

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