In the park’s most northerly sector, the Fitz Roy Range has sheer spires to match Torres del Paine , but even if you’re not a top technical climber, trails from the village of El Chaltén  to the base of summits such as Fitz Roy and Cerro Torre make for exhilarating hikes.
It’s even possible to traverse the southern Patagonian ice fields, but visitors seeking a sedate outdoor experience will find a handful of former sheep estancias, onetime Patagonian wool producers that have reinvented themselves as tourist accommodations.
From a signposted trailhead at El Chaltén’s north end, just south of the former Camping Madsen, the Sendero Laguna Torre is an 11-kilometer track gaining about 200 meters in elevation as it winds through southern beech forests to the climbers’ base camp for Cerro Torre; figure about 3–3.5 hours. At the lake, in clear weather, there are extraordinary views of Cerro Torre’s 3,102-meter summit, crowned by the so-called ice-and-snow “mushroom” that technical climbers must surmount.
From the Madsen pack station, the more demanding Sendero Río Blanco trail rises steeply at the outset before leveling out through boggy beech forest and continuing to the Fitz Roy base camp, climbing about 350 meters in 10 kilometers. About midway to Río Blanco, a signed lateral leads south to Laguna Capri, which has backcountry campsites.
From Río Blanco, a vertiginous zigzag trail ascends 400 meters in just 2.5 kilometers to Laguna de los Tres, a glacial tarn whose name commemorates three members of the French expedition—René Ferlet, Lionel Terray, and Guido Magnone—who summited Fitz Roy in 1952. Truly a top-of-the-world experience, Laguna de los Tres offers some of Patagonia’s finest Andean panoramas.
From the Río Blanco campground (reserved for climbers), a northbound trail follows the river’s west bank north to Laguna Piedras Blancas, whose namesake glacier continually calves small icebergs. The trail continues north to the Río Eléctrico, beyond the park boundaries, where a westbound trail climbs the river to Piedra del Fraile and a possible circuit of the Campo de Hielo Sur, only for experienced snow-and-ice trekkers. At the Río Eléctrico, it’s also possible to rejoin the road from El Chaltén  to Lago del Desierto .
From the park visitors center, a short ascent (about 45 minutes) leads to the Mirador de los Cóndores, for good views of El Chaltén and the confluence of the Río de las Vueltas and the Río Fitz Roy.
From the same trailhead, the hike to Loma del Pliegue Tumbado is a 500-meter elevation gain that yields some of the area’s views—weather permitting, the panorama takes in Fitz Roy, Cerro Torre, Cerro Solo, Glaciar Torre, and Lago Torre, but the wind at the overlook can be overpowering. Four hours is about right for an average hiker, but the truly fit can do it three; the descent takes about 2.5 hours.