ALTITUDE
Acclimatising for Machu Picchu
Cusco sits higher than the citadel, so altitude needs respect — how to sequence your days, spot the warning signs and arrive at the ruins feeling well.
Check dates and availability ↗The counterintuitive numbers
The first thing to understand about altitude on this trip is that Machu Picchu is not the high point. The citadel sits at around 2,430 metres, but Cusco — where most people fly in and start — is considerably higher, at roughly 3,400 metres. That matters, because the real altitude challenge often comes on day one in Cusco, not at the ruins themselves. Flying straight from sea level into Cusco and racing about is a common way to feel awful. The thinner air holds less oxygen, and your body needs time to adjust. The good news is that a little planning turns altitude from a trip-wrecker into a non-issue for most people. The guiding principle is simple: arrive gently, go up slowly, and don't schedule your most demanding day for the moment you're least adjusted.
Knowing the warning signs
Mild altitude sickness is common and usually manageable, but it helps to recognise it. Typical early symptoms include headache, tiredness, breathlessness on exertion, poor sleep, mild nausea or loss of appetite — often appearing within the first day at altitude and easing as you adjust. The sensible response is to slow down, rest, hydrate and avoid pushing higher until you feel better. What you should not ignore are more serious signs — severe or worsening headache, confusion, breathlessness at rest, or a persistent cough — which call for descending and seeking medical help promptly. Most visitors experience nothing worse than a nagging headache and some huffing on the stairs. Still, everyone reacts differently regardless of age or fitness, so listen to your body rather than your itinerary. This is general information, not medical advice; if you have any health concerns, speak to a doctor before you travel.
The Sacred Valley trick
Here's the single most useful piece of acclimatisation strategy: consider basing yourself in the Sacred Valley rather than Cusco for your first nights. Towns like Ollantaytambo and Urubamba sit several hundred metres lower than Cusco, which can make sleeping and adjusting noticeably easier while you're most vulnerable. A popular, gentle sequence is to travel down to the valley soon after arriving, spend a night or two there exploring lower-altitude ruins and markets, visit Machu Picchu, and save higher Cusco for the end of the trip when you're well adjusted. It flips the instinctive plan — most people stay in Cusco first because that's where they land — but going lower before you go high is exactly what acclimatisation asks for. If your schedule allows it, this one adjustment does more for how you'll feel than almost anything else.
Coca, water and the small stuff
Beyond sequencing, a handful of everyday habits make a real difference. Drink plenty of water, since altitude and dry mountain air dehydrate you faster than you'd expect. Go easy on alcohol and heavy meals for the first day or two, and don't plan strenuous hikes the moment you land. Locals have leaned on coca for generations — coca tea and coca leaves are offered everywhere in the highlands and many travellers find them soothing, though they're a traditional remedy rather than a guaranteed fix, and coca products shouldn't be carried across borders. Some visitors ask a doctor in advance about preventive medication; whether that's appropriate is a personal medical question. Rest when you're tired, keep warm, and give yourself permission to move slowly. None of this is dramatic — it's mostly about pacing and patience rather than any single miracle cure.
On the day at the citadel
By the time you reach Machu Picchu, the altitude is usually the least of your worries — remember, you'll have come down from Cusco or the valley to a lower ridge. The visit still involves a fair amount of walking on uneven stone steps and terraces, with some ups and downs, so a measured pace, good footwear and regular pauses keep you comfortable. Take water, don't rush your circuit, and let your guide set an unhurried rhythm that suits the group. If you've added one of the peaks, that's a genuine climb and a different matter — treat it as the demanding part of the day and only attempt it if you're feeling strong and well acclimatised. Weather on the ridge can shift quickly, so layers help you regulate as you exert. Handled sensibly, the citadel itself rarely troubles people who've eased into the altitude beforehand.
Building a comfortable itinerary
Pulling it together, the comfortable trip has a shape: arrive, go lower before higher, and don't stack your hardest efforts onto your least-adjusted days. A workable rhythm for many is a gentle first day, a night or two in the lower Sacred Valley with easy sightseeing, then Machu Picchu, then Cusco proper once you've had days to adapt. Build in slack so a rough first night doesn't derail everything, and keep the first day's plans flexible. If you're trekking the Inca Trail or Salkantay, acclimatisation isn't optional — those routes cross high passes, so arriving already adjusted is part of finishing happy. Above all, resist the urge to cram. Altitude rewards patience and punishes haste, and the travellers who plan a slower build-up almost always enjoy the whole region more. Give your body the days it needs and Machu Picchu becomes a pleasure rather than an endurance test.