The trail begins in the open Arkansas Valley, then winds through the forest, following Halfmoon Creek. You will pass many camping areas and hiking trailheads before the ride gets interesting. Shortly after the Mt. Massive and Colorado Trailhead, the climb gets steeper and rockier. From here, Halfmoon stays right at the first fork and soon crosses the creek. It continues to climbs to 12,800, well above the treeline and up to Iron Mike Mine, where it deadends.
Loacted southwest of Leadville, this trail leads up to an elevation of 12,800 feet, from open plains and numerous creek crossings and ends at the hisotirc Iron Mike Mine.