Beginning at Lago Jeinimeni, this three- to four-day (51km) backpacking route connects to Aviles Valley in Parque Nacional Patagonia via Paso de la Gloria. It has been gaining a lot of interest, though the logistics are not easy. It requires navigational skills and mountain expertise, as there are minimal markings and many river crossings. Transfers to and from the trailhead must be arranged ahead as there's no phone signal at either end of the trail.
Contact the visitor center at Parque Nacional Patagonia or local outfitters in Chile Chico for more information about the walk.