From Highway 130 (see Getting There) take an established road north to Sugarloaf, Libby Lake, and Lewis Lake Campgrounds. The turnout is about one mile east of the obvious loop in the road, near Snowy Range Pass. Proceed to Lewis Lake Campground.
From Lewis Lake Campground, take the marked trail that goes between Lewis Lake and Libby Lake. The trail continues nearly due-West until it reaches the saddle between Sugarloaf Mountain and Medicine Bow Peak. From here, continue on the designated trail up the steep east slopes of Medicine Bow Peak, which will lead to the summit. You can return the ascent route, or follow the trail back to Lake Marie if you've stashed a vehicle there.
For winter climbs, note that the road won't be plowed much past Snowy Range Ski Area. Just follow the road-marking poles (or your TOPO), until you reach the lakes, then proceed from there.
General hiking boots, water, and proper clothing is sufficient for summer hiking. Trekking poles make things easier, too. For winter, crampons and/or snowshoes, ice axe, and warm clothing is essential for the steep climb.
If you have information about this route that doesn't pertain to any of the other sections, please add it here.