How long does altitude sickness last in Cusco?

Mild symptoms typically resolve in 24-48 hours. Most people feel significantly better by day 3. If symptoms worsen or persist beyond 3 days, descend to lower elevation.

Can I fly directly to Cusco from Lima?

Yes, but this increases altitude sickness risk going from sea level to 11,200 feet instantly. Consider spending a night in an intermediate city like Arequipa (7,550 feet) to acclimatize gradually.

What's the difference between mild and severe altitude sickness?

Mild includes headache, fatigue, nausea, and loss of appetite. Severe includes confusion, difficulty breathing, severe headache, or vomiting. Severe symptoms require immediate descent and medical attention.

Should I avoid the Sacred Valley if I have altitude sickness?

The Sacred Valley sits at 9,000-10,000 feet - lower than Cusco. Many people feel better there. It's actually a good place to recover while still seeing Inca sites.

Does physical fitness prevent altitude sickness?

No. Fitness doesn't prevent altitude sickness. Elite athletes get it just as often as anyone else. Age, gender, and fitness level don't predict who will be affected.

How to handle altitude sickness in Cusco

Arrive in Cusco 2-3 days before heading to higher altitudes, stay hydrated, avoid alcohol initially, and rest on your first day. Take acetazolamide (Diamox) if symptoms persist, and descend immediately if you experience severe headaches, nausea, or difficulty breathing.

Arrive early and plan buffer days. Get to Cusco 2-3 days before any Machu Picchu trek or Sacred Valley tours. Book your first night's accommodation before arriving. This gives your body time to adjust to 11,200 feet elevation gradually.
Take it easy on day one. Skip intensive activities your first day. Walk slowly around San Blas neighborhood or sit in Plaza de Armas. Your heart will work harder at altitude - listen to it.
Hydrate aggressively. Drink 3-4 liters of water daily. Buy bottled water or use purification tablets. Dehydration makes altitude sickness worse. Avoid alcohol for your first 48 hours.
Try coca tea or leaves. Drink coca tea (mate de coca) available at every cafe, or chew coca leaves sold on street corners for 2-3 soles per bag. This traditional remedy helps many people adjust.
Consider medication. Take acetazolamide (Diamox) 125mg twice daily starting 24 hours before arrival. Get a prescription from your doctor before traveling. Continue for 2-3 days in Cusco.
Recognize warning signs. Watch for severe headaches, persistent nausea, confusion, or difficulty breathing. These indicate serious altitude sickness. Descend to lower elevation immediately and seek medical help.
Know where to get help. Hospital Nacional Dos de Mayo (Avenida de la Cultura) handles altitude emergencies. Clínica Pardo (Avenida de la Cultura 710) has English-speaking staff. Keep their numbers saved.

How long does altitude sickness last in Cusco?: Mild symptoms typically resolve in 24-48 hours. Most people feel significantly better by day 3. If symptoms worsen or persist beyond 3 days, descend to lower elevation.
Can I fly directly to Cusco from Lima?: Yes, but this increases altitude sickness risk going from sea level to 11,200 feet instantly. Consider spending a night in an intermediate city like Arequipa (7,550 feet) to acclimatize gradually.
What's the difference between mild and severe altitude sickness?: Mild includes headache, fatigue, nausea, and loss of appetite. Severe includes confusion, difficulty breathing, severe headache, or vomiting. Severe symptoms require immediate descent and medical attention.
Should I avoid the Sacred Valley if I have altitude sickness?: The Sacred Valley sits at 9,000-10,000 feet - lower than Cusco. Many people feel better there. It's actually a good place to recover while still seeing Inca sites.
Does physical fitness prevent altitude sickness?: No. Fitness doesn't prevent altitude sickness. Elite athletes get it just as often as anyone else. Age, gender, and fitness level don't predict who will be affected.