How long does altitude sickness last in Cusco?

Most people adjust within 2-3 days if they take proper precautions. Symptoms typically peak in the first 24 hours and gradually improve.

Should I take altitude sickness pills before arriving?

Consult your doctor about acetazolamide (Diamox). Some travelers start it 1-2 days before arrival, but it's not necessary for everyone and has side effects.

Can I fly directly to Cusco from sea level?

Yes, most international travelers fly directly to Cusco from Lima. While some recommend stopping in an intermediate city first, most people successfully acclimatize with direct flights if they rest properly upon arrival.

What's the difference between altitude sickness and just being tired?

Altitude sickness includes headaches, nausea, dizziness, and fatigue that doesn't improve with rest. Normal travel tiredness goes away after a good night's sleep.

How to Acclimatize to Altitude in Cusco

Arrive in Cusco 2-3 days before any major activities, stay hydrated with 3-4 liters of water daily, and avoid alcohol for your first 48 hours. Most people adjust within 2-3 days if they take it slow.

Land and rest immediately. Head straight to your accommodation from the airport. Do not attempt sightseeing or walking around the city on arrival day. Cusco sits at 11,152 feet and your body needs time to adjust to the reduced oxygen levels.
Drink water constantly. Consume 3-4 liters of water per day, starting from the moment you land. Dehydration makes altitude sickness worse. Carry a water bottle everywhere and sip regularly rather than chugging large amounts.
Avoid alcohol for 48 hours. Skip beer, pisco sours, and wine for your first two days. Alcohol dehydrates you and can mask altitude sickness symptoms, making it harder to know if you're adjusting properly.
Eat light, frequent meals. Stick to simple carbohydrates like bread, pasta, and quinoa. Avoid heavy, fatty foods that require more energy to digest. Your body is already working harder in the thin air.
Take it slow for 72 hours. Walk at half your normal pace. Climb stairs slowly. If you feel winded, stop and breathe. Most people feel significantly better by day 3 if they don't push themselves.
Try coca tea. Drink mate de coca (coca leaf tea) available at every cafe and hotel. While scientific evidence is limited, many travelers find it helps with headaches and nausea. It's legal and culturally significant in Peru.
Know when to seek help. See a doctor if you experience severe headaches, vomiting, confusion, or difficulty breathing while resting. Cusco has clinics experienced with altitude sickness, and descent to lower elevation may be necessary.

How long does altitude sickness last in Cusco?: Most people adjust within 2-3 days if they take proper precautions. Symptoms typically peak in the first 24 hours and gradually improve.
Should I take altitude sickness pills before arriving?: Consult your doctor about acetazolamide (Diamox). Some travelers start it 1-2 days before arrival, but it's not necessary for everyone and has side effects.
Can I fly directly to Cusco from sea level?: Yes, most international travelers fly directly to Cusco from Lima. While some recommend stopping in an intermediate city first, most people successfully acclimatize with direct flights if they rest properly upon arrival.
What's the difference between altitude sickness and just being tired?: Altitude sickness includes headaches, nausea, dizziness, and fatigue that doesn't improve with rest. Normal travel tiredness goes away after a good night's sleep.