Avoiding altitude sickness in Cusco and Machu Picchu
Combat altitude sickness by spending your first 48 hours in the Sacred Valley rather than directly in Cusco, hydrating with at least 3 liters of water daily, and consulting your doctor about a Diamox prescription before you leave. Avoid heavy meals and alcohol for the first three days to let your body acclimatize to the thinner air.
- Start in the Sacred Valley. Instead of staying in Cusco (3,400m), book your first two nights in Pisac or Ollantaytambo (2,800m). Lower altitudes allow your body to adjust without the immediate stress of the high city elevation.
- Hydrate and supplement. Drink 3 liters of water a day. Dehydration accelerates altitude symptoms. You can also drink coca leaf tea, which is served freely in most hotels, as it acts as a mild stimulant to help with the physical fatigue.
- Eat light. Digestion consumes significant oxygen. Stick to carbohydrates and small portions for the first 72 hours. Avoid red meat and heavy dairy, as your metabolism slows down significantly at high altitudes.
- Manage your energy. Limit your activity for the first 48 hours. Don't plan strenuous hikes immediately. If you experience a pounding headache, nausea, or dizziness that doesn't subside with rest, move to a lower altitude immediately.
- Is Machu Picchu higher than Cusco?
- No. Machu Picchu is at approximately 2,430m, which is lower than Cusco (3,400m). You will generally feel better at Machu Picchu than you do in Cusco.
- Should I take oxygen canisters?
- Most hotels in Cusco provide oxygen if you feel unwell. You don't need to carry your own, but if you have a medical condition, consult your physician before traveling.
- How long does it take to fully acclimatize?
- Most people feel normal after 3 to 5 days, but listen to your body—it can take up to a week for some travelers to stop feeling winded.