Frequently asked questions about climbing Aconcagua (6,962 m / 22,841 ft), the highest mountain in the Andes and in the Western Hemisphere. These answers apply to independent trekkers and guided groups using the Normal Route from the Argentine side near Mendoza.
Yes. Every climber must obtain a permit from Parque Provincial Aconcagua before entering the park.
Most climbers plan a multi-week trip from Mendoza with time built in for acclimatization before the summit attempt.
Climbers stay at established base camps along the Normal Route as they move higher on the mountain.
Altitude sickness is common above 4,000 m. Climbers should ascend slowly and watch for headache, nausea, and fatigue.