People preparing a multi-day trek in the Dolomites spend weeks on the ascent, the walking times, the weight of the pack. Those are the wrong variables.
The variable that decides whether your route exists at all is how many beds there are in the hut on the third night. And there are very few.
We counted them for the huts we follow. The result explains on its own why everything is full in July.
The bed count
Our archive holds twenty-two surveyed huts, with altitude and contacts checked against the huts' own sources. Twenty of them sleep people: the other two are daytime stops.
Fourteen state how many beds they have, on their own website or on those of the CAI sections and tourist boards, and they come to 1,103 beds. Not per night in one area: in total, spread across all the Dolomites we cover, from the Tre Cime to the Brenta. The other six, including the Lagazuoi, the Lavarella and the Tissi, do not give a number, and we do not make one up.
For scale: the Sella pass, which is a single car park, has 199 spaces for cars. The fourteen huts whose beds we know have 1,103 places for people.
And the distribution is tighter than the sum. The Locatelli, the largest, has 140. The Nuvolau, probably the most photographed hut in the Dolomites, has 24.
- Rifugio Locatelli, 2,405 m: 140 beds
- Rifugio Vajolet, 2,243 m: 130 beds
- Rifugio Bolzano on the Sciliar, 2,457 m: 110 beds
- Rifugio Auronzo, 2,333 m: 99 beds
- Rifugio Coldai, 2,135 m: 93 beds
- Rifugio Boè, 2,873 m, the highest we hold: 78 beds
- Rifugio Nuvolau, 2,575 m: 24 beds
Why the chain matters, not the single hut
A hut-to-hut trek is a chain of consecutive bookings. It is not enough for one hut to have room: every hut has to have room, on the right nights, in the right order.
That changes the arithmetic. If each stage has an eighty per cent chance of a free bed, a five-stage route has roughly a thirty per cent chance of existing exactly as you drew it. Not because the huts are full, but because there are five of them.
Which is why the narrowest link dictates everything. Across the Alta Via 1 stages we have surveyed, Lavarella, Lagazuoi, Nuvolau, Coldai and Tissi, only two state their beds: the Coldai has 93, the Nuvolau 24, a quarter of that. And anyone who does not get into the Nuvolau has to redraw two days, not one.
The practical consequence is counterintuitive: you book starting from the smallest hut on the route, not the first one. Fix that night, then build the others around it.
The window is shorter than it looks
High huts generally open between late June and early July, when the snow leaves the cols, and most close between the end of September and the first days of October.
That is about three months, and they are not three equal months: the tail of June can still hold snow in north-facing gullies, and the start of October can already have new snow.
Anyone who wants the quiet stretch finds it in September, but the margin is thin. We wrote about it in the Dolomites in September, and the following month changes everything: in October most of these huts are already shut and daylight drops by an hour and a half.
What a hut night is not
It is not a hotel at altitude. You almost always sleep in a dormitory, dinner is at a time the hut decides rather than you, and electricity and hot water are rationed resources, not services.
A sleeping bag liner is required almost everywhere and is not something you find on arrival: turn up without one and at best you buy it, at worst you sleep as you are.
Phone coverage up high is patchy, and the signal that exists at the col may not exist in the next basin. Bookings are made beforehand, from the valley, not along the way.
The individual hut pages, with altitude, beds and contacts, are in the guide to the Dolomite mountain huts.
How high you sleep
The other thing people underestimate is altitude. Of the twenty huts with beds that we follow, the median is close to 2,300 metres.
The highest is the Boè at 2,873. The lowest with beds is the Sorgenti del Piave at 1,830. Between the two there is more than a kilometre of height, and sleeping at 2,800 on your first night after arriving from sea level is a reliable way of not sleeping at all.
People who are not acclimatised put the highest night in the middle of the route, not at the start. It is an old rule and it still holds.
Frequently asked questions
How many beds are there in the Dolomite mountain huts?
Our archive holds twenty-two surveyed huts, twenty of them with overnight accommodation; the fourteen that state their bed numbers have 1,103 in total. That is not the total for the Dolomites, it is the total for the huts we follow and verify, but it gives the scale: the largest, the Locatelli, has 140, and the Nuvolau has 24.
How far ahead should you book huts for a multi-day trek?
As early as you can, and starting from the smallest hut on the route rather than the first. A hut-to-hut trek is a chain of consecutive nights: one missing link means redrawing two stages, not one. The narrowest link decides everything else.
When is the season for hut-to-hut trekking in the Dolomites?
From late June or early July, when the high huts open, until the end of September. Most close between the end of September and the first days of October. The tail of June can still hold snow in north-facing gullies, and the start of October can already have new snow.
What do you need to bring to sleep in a mountain hut?
A sleeping bag liner, which is required almost everywhere and is not available on arrival. You sleep in a dormitory, dinner is at a time the hut sets, and hot water and electricity are rationed. It is not a hotel at altitude.
How high do you sleep in the Dolomite huts?
High: of the twenty huts with beds that we follow, the median is close to 2,300 metres. The highest is the Boè at 2,873 metres, the lowest with beds is the Sorgenti del Piave at 1,830. Anyone not used to altitude puts the highest night in the middle of the route, not on the first evening.
Can you walk the Alta Via 1 booking at the last minute?
It is risky. Across the stages we have surveyed, Lavarella, Lagazuoi, Nuvolau, Coldai and Tissi, the beds are not evenly spread: the Coldai has 93, the Nuvolau 24. With five consecutive nights to fit together, the chance that the route exists exactly as you drew it falls fast.