6 curated Hiking spots in Argentina, each with its own note and source.
Mendoza · Best time: Nov–Mar · Advanced
Aconcagua rises to 6,967 m. The northern normal route is technically straightforward, needing no ropes or specialised gear, yet Plaza de Mulas base camp already sits at 4,370 m. Altitude sickness affects most climbers, and the mountain records around three deaths a year.
Sources: Wikipedia, Huka – Guía de escalada Argentina
Salta · Best time: Year-round · Beginner
Cafayate lies 192 km and about 3.5 driving hours from Salta in the Calchaquí Valleys. On foot the targets are the Quebrada de las Conchas, a provincial reserve, and the Cascada del Río Colorado waterfall some 6 km from town. Vineyards around it range from 1,600 to 3,100 m in altitude.
Sources: Visit Salta (Secretaría de Turismo de Salta)
Río Negro · Best time: Nov–Apr · All levels
El Bolsón sits at 312 m in a glacially formed valley, with surrounding peaks reaching 2,260 m; the Río Azul and Río Quemquemtreu run through the municipal area. Annual rainfall of about 906 mm falls mostly in winter. January averages a 27.4 °C daily maximum and a 7.9 °C minimum.
Sources: Wikipedia
Santa Cruz · Best time: Nov–Mar · All levels
The village portal lists day walks with time and grade: Laguna de los Tres 8–9 hours, Laguna Torre 7–8 hours, Loma del Pliegue Tumbado 7–8 hours, all rated medium; Laguna Capri 4–5 hours, easy. Most of these walks require no previous mountain experience, according to the portal.
Sources: El Chaltén (Portal turístico), Administración de Parques Nacionales (Argentina), ClimbingAway
Tierra del Fuego · Best time: Year-round · All levels
Tierra del Fuego National Park starts 11 km west of Ushuaia off Ruta 3 and protects 630 km² of coast and southern beech forest. The Senda Costera links Ensenada Bay with Lapataia Bay on Lago Roca. The train from Fin del Mundo station covers 5 km into the park in about 50 minutes.
Sources: Wikipedia
Neuquén · Best time: Nov–Apr · All levels
From Villa La Angostura a pedestrian trail of nearly 13 km runs along the Quetrihué peninsula to the arrayán forest inside the 1,796-hectare national park; a viewpoint comes just 1 km after the trailhead. Boats and catamarans also serve the park. Camping is not allowed inside it.
Sources: Wikipedia, Administración de Parques Nacionales (Argentina), Cerro Bayo (Betreiber), Patagonia Bike Trips
Without a dedicated Hiking note yet, listed on the country page: Iguazú-Wasserfälle, Mendoza.