Altitude in Svaneti: 1,500 m and your first night

The numbers, before the worry

Mestia sits at roughly 1,500 metres. Zugdidi, four to five hours down the road, is close to sea level, which means the drive up gains almost all of that in a single afternoon. Ushguli, at the head of the valley, is around 2,100 metres and is regularly described as one of the highest permanently inhabited settlements in Europe.

Above Mestia the ground keeps going. The Koruldi Lakes sit at roughly 2,700 metres on the ridge behind town, reached in a long day on foot or a short, violent ride in a hired jeep. The passes on the four-day trek to Ushguli fall in much the same band.

These are modest numbers by mountain standards. Acute mountain sickness is usually discussed from about 2,500 metres upwards, and most visitors to Svaneti feel nothing worse than being more out of breath on the guesthouse stairs than they expected.

But the first night is real, and pretending otherwise helps nobody. Land at Kutaisi in the morning, drive straight up, eat a large dinner with wine, and there is a fair chance you wake at three with a dull, tight headache and a heart that will not settle.

Mestia at golden hour: 1,500 metres, with another twelve hundred stacked on the ridge behind it.

What thin air actually does

There is less oxygen in every breath at 1,500 metres — roughly eighty-three per cent of what you get at sea level, and less again at Ushguli. Your body notices within hours and starts compensating: you breathe a little faster and deeper, your heart works slightly harder, and your kidneys quietly begin adjusting your blood chemistry.

None of that is dangerous. It is simply work, and it happens while you are doing other work — hauling a bag up wooden stairs, digesting a heavy dinner, processing alcohol. Stack enough of those onto the same evening and the compensation shows up as a headache and a broken night.

Oxygen About 17% less available at 1,500 m than at sea level, and roughly a fifth less at 2,100 m. Breathing Faster and deeper without you noticing, day and night. It is the main way the body adapts. Sleep Broken sleep and vivid dreams on the first night or two are normal, even without a headache. Water You lose more of it breathing dry mountain air. Two to three litres a day, more when walking. Fitness Being fit does not make you immune. Runners get altitude headaches too, and often push harder.

The first day, and the rules for it

The single most useful rule is that arrival day is not a walking day. The drive from Zugdidi is four to five hours of hairpins, and you will be tired in a way that has nothing to do with altitude — the two feel identical from the inside. Walk around Mestia, look at the towers, eat properly, sleep early.

Day two is for something moderate: the Chalaadi glacier trail, or the lower half of the Koruldi track. Day three is for the long climb. That ordering costs you nothing on a week-long trip, and it is the difference between enjoying the ridge and grinding up it with a headache you have been ignoring since breakfast.

Arrive and stop No hike on the day you drive up. Towers, a slow dinner, an early night. Water first Start drinking on the road up, not after the headache has already arrived. Eat carbohydrate Appetite dips slightly at altitude. Eat anyway — low fuel feels a lot like thin air. One glass, not five Save the supra for your second evening, once you have had a night to adjust. Sleep low Base in Mestia at 1,500 m and climb from there. Ushguli later in the trip, not first.

On arrival-night wine A Svan supra on your first evening is one of the better things that can happen to you, and it is also the most reliable way to guarantee a bad night. Alcohol dehydrates you and blunts your breathing at exactly the moment your body is trying to breathe more. A glass or two with dinner, water beside it, and take the full table on night two.

Ushguli, and sleeping at 2,100

Ushguli is the reason most people come, and it is six hundred metres above Mestia — enough that a few travellers who felt fine in town notice a headache on their first night in the village. That is not a reason to skip it. It is a reason not to make it your first stop off the plane.

The village has guesthouses, wood stoves and very little else. The road in is rough, and the drive back down to Mestia takes two to three hours depending on the season and the driver. If something is going wrong with you at two in the morning, that distance matters considerably more than the six hundred metres does.

Ushguli at 2,100 metres: further up, further out, and a long way from a pharmacy.

Koruldi, and climbing high to sleep low

The Koruldi Lakes, at roughly 2,700 metres, are the highest most visitors to Svaneti will stand, and they are a day trip. That is the useful part: you spend two or three hours in air that is genuinely thin, then come back down to 1,500 metres to sleep. Climbing high and sleeping low is what acclimatisation looks like in practice.

On foot it is a demanding day out of Mestia — roughly four to five hours up past the cross above town, steep from early on, and less coming back. Jeeps grind up the rough track for something like 150–250 GEL per vehicle (2025), split between passengers. Up by jeep and down on foot is a fair compromise, and hard on the knees.

Height Around 2,700 m on the ridge above Mestia, facing the main Caucasus wall. On foot Four to five hours up, steep from the start. Day two or three, never day one. By jeep Roughly 150–250 GEL per vehicle (2025), shared. Rough track, short season, weather-dependent. The trick A day at 2,700 m, a night at 1,500 m. That is textbook acclimatisation, free of charge.

When a headache means going down

The honest position is that serious altitude illness is rare below 2,500 metres, and Svaneti's ordinary trekking routes barely touch that line. What is common is a headache, poor sleep and mild nausea in the first twenty-four hours, all of which usually fade by the second morning with nothing done about them at all.

What matters is the direction of travel. Symptoms that improve are acclimatisation; symptoms that get worse while you rest are a signal to stop climbing. Descent is the treatment, and in Svaneti descent is easy — Mestia is downhill from wherever you have got to, and Zugdidi is a long way downhill from Mestia.

Settling Headache easing by the second morning, sleep improving. Carry on as planned. Not shifting A headache ordinary painkillers do not touch, with nausea. Rest at the same height, do not climb. Vomiting Repeated vomiting rather than one queasy hour. Go down, do not push for the pass. Breathless at rest Short of breath sitting still, or a cough that appears overnight. Go down and get seen. Confused or unsteady Staggering, slurred speech, odd behaviour. Descend immediately, do not wait for morning.

Ushguli is not the place to wait and see Mestia has pharmacies and a small hospital. Ushguli has neither, and the road out is two to three hours of dirt. If someone is deteriorating rather than settling, move them down while it is still an inconvenience rather than an emergency.

Building the week so the mountain fits

The trek from Mestia to Ushguli takes four days and crosses passes in the 2,300 to 2,700 metre range — exactly the sort of profile that feels easy after two nights at 1,500 metres and unpleasant if you woke up in Tbilisi this morning. The altitude is not the problem; the compression of the schedule is.

The order that works for almost everyone: arrive in Mestia and do nothing, take a moderate walk on day two, climb something on day three, start the trek on day four. If the trip is short, cut the last stage of the trek rather than the first two unglamorous days at the bottom.

Svan towers with the main Caucasus ridge behind: the trek's passes sit between roughly 2,300 and 2,700 metres.

Who should take it more slowly

Most people need nothing beyond a slow first day and a water bottle. A few should plan with more care, and none of this is a reason to stay home: Svaneti is not a base camp, and the villages are lived in year round by people born at these heights.

If you take regular medication, have a heart or lung condition, or have had a bad time at altitude before, the conversation to have is with your own doctor before you fly — not with a guesthouse host at midnight. Acetazolamide exists; whether you need it at 2,100 metres is not our call to make.

Small children They cannot always describe a headache. Watch appetite, sleep and mood, and go down if unsure. Heart or lung conditions Ask your own doctor before booking, not after arriving in Mestia. Previous altitude trouble It tends to repeat. Add a day in Mestia and skip the jeep to Koruldi at the start. Straight off a long flight Kutaisi in the morning, Mestia by evening is a big day. Sleep in Zugdidi or Kutaisi if you can.

Five mistakes, so you skip them

Four of these five we have made ourselves, and the first accounts for most of the bad first nights in Mestia.

Flying in and driving up Fifteen hundred metres of gain and a five-hour road in one day. Break the journey in Zugdidi or Kutaisi. Hiking on arrival day Keep the glacier and Koruldi for day two and three. The first afternoon is for towers and dinner. The full supra on night one One glass with dinner and water beside it. Take the long table on your second evening. Sleeping in Ushguli first Base at 1,500 m in Mestia and move up to 2,100 later, once you have had two nights. Pushing on when it worsens Symptoms growing while you rest mean going down, not swallowing another painkiller.

FAQ

Questions people ask before going up

In short Arrive, sit down, climb tomorrow Give Mestia the first afternoon, drink more water than feels necessary, keep arrival-night wine to a glass or two, and save Koruldi and Ushguli for day two or three. Most people feel nothing worse than a dull headache. If it grows while you rest instead of fading, go down. Svaneti Back to the journal

Altitude in Svaneti: what 1,500 metres does to your first day