That the Dolomites are crowded in summer is obvious to anyone who has been. What nobody has ever lined up are the numbers: what time a mountain pass car park actually fills, how many hours it stays full, whether the situation is getting worse within the same season or only from one year to the next.
Since June we have been recording the occupancy of seven high-altitude car parks, hour by hour. That is 67 days of data, and this is the first assessment, with the season still open.
Here is the sharpest finding up front: at the Passo Sella, in the first six days of August, the car park filled completely every single day. On average at 7:42.
How we collected these numbers
The Autonomous Province of Bolzano publishes the free spaces of some car parks in real time through its open data portal. It is official, numeric, updated every couple of minutes. But it has one limit that makes it useless for spotting a trend: it exposes only the value right now, and keeps no record of yesterday.
We record it. Every day our system saves the hourly profile of each car park and archives it. For each hour we keep the minimum number of free spaces, that is the moment of peak pressure, which is what matters to anyone deciding what time to leave home.
The data in this article runs from 1 June to 6 August 2026 and covers seven car parks: Passo Sella, Passo Gardena, Plan de Gralba, Monte Pana, Sciuz, Mont Sëuc and the village garage in Selva. That is 412 recorded days, of which 343 are usable: we excluded those on which a sensor read zero even through the night, because a mountain pass car park is never full at three in the morning.
June, July, August: the curve
The Passo Sella has 199 spaces and is the most telling point we watch, because it is the gateway to one of the busiest circuits in the Dolomites. The trend within the season is unmistakable.
In June the car park filled completely on 6 days out of 30, one day in five, and the full period lasted little more than two hours. In July the saturated days became 24 out of 31, three quarters of the month. In the first six days of August it was six out of six.
It is not only the frequency that changes, it is the clock. The average time the car park fills moved from 8:30 in June to 7:54 in July to 7:42 in August. And the duration of the full period rose from 2.3 to 3.5 hours.
In the worst quarter of the days we observed, the car park was already full by 7 in the morning.
- June: 6 full days out of 30 (20%), average fill at 8:30, lasting 2.3 hours
- July: 24 full days out of 31 (77%), average fill at 7:54, lasting 3.3 hours
- August (first 6 days): 6 out of 6 (100%), average fill at 7:42, lasting 3.5 hours
- On the worst days the lot fills at 7:00 and stays full for 5 hours
It is no longer a weekend phenomenon
This is what surprised us most. In the popular picture, mountain gridlock is a Saturday and Sunday affair, and as recently as 2019 the local press still described it that way.
The six days with the most hours of saturation this season are a Saturday, a Sunday, a Wednesday, a Friday, another Saturday and a Tuesday. On 4 August, a Tuesday, the Passo Sella was full from 7 in the morning and stayed that way for five hours.
Spread across the days of the week, the difference almost vanishes: on Saturday the car park fills on average at 7:30, on Wednesday at 8:18. Forty-eight minutes between the peak day and an ordinary weekday. The classic advice to avoid the weekend, today, moves very little.
Tuesday remains the statistically quietest day, but with saturation on 3 days out of 10 it is no safe haven.
When space comes back
There is one figure no guidebook gives you and that is genuinely useful: the car park empties sooner than you would think. On average, on days when it saturates, space returns around midday.
The logic is the hiker's: go up early, walk, come down in the middle of the day. Someone arriving at one in the afternoon, against every instinct, often finds more room than someone arriving at nine.
This is not an invitation to turn up at 13:00, because by then many walks no longer stand up and afternoon storms are a serious problem. But it is a real option for anyone planning a short climb, lunch at a hut or the light at the end of the day.
The paradox: the spaces exist, just not where people look for them
While the Passo Sella was full on 54% of the days observed, the Plan de Gralba car park, 400 spaces a few minutes down the road, saturated only 5 times in 65 days. Monte Pana, 340 spaces, once.
It is not that Val Gardena is short of parking. It is that demand concentrates on one point, the one with the most direct access to the classic circuit, and everyone arrives there at the same hour.
This is exactly the mechanism we describe in our guide to overtourism in the Dolomites: the problem is not how many people go up the mountain, but how little they are spread across space and time. These numbers measure it across a full season for the first time.
What these figures do not tell you
It is worth being explicit about the limits, because there are plenty.
The sensors cover South Tyrol and not even all of it: Trentino and the Veneto publish nothing equivalent, so the Tre Cime, Braies, Misurina, Fedaia and the Brenta Dolomites fall outside this analysis even though they are among the places under most pressure. A full car park, moreover, does not tell you how many people were there: it tells you how many cars. And we do not know how many turned around on finding it full, which is perhaps the most interesting number of all.
Finally, 67 days are a partial season, not a historical comparison. We can say how this summer is going, not yet whether it is worse than the ones before. That comparison will come, but it needs time on deposit: which is exactly why we started recording now.
Monitoring continues to the end of September
This is not a closed snapshot. We keep recording every day through August and September, Ferragosto included, and at the end of the season we will publish the full assessment: the absolute peak, the month-by-month comparison, and how much really changes between high season and September, which is the question anyone who can choose their dates actually asks.
We update this page every week with the new figures, always stating the date of the last update. If you are planning a trip in September, come back: the data you need does not exist yet, we are collecting it.
The raw data is public and downloadable from www.ledolomiti.it/dati/stato.json, under a CC BY 4.0 licence: anyone can reuse it, commercially too, with attribution. If you work in tourism, for a local authority or in research and need a different cut of these numbers, write to us.
Frequently asked questions
What time should you arrive at the Passo Sella?
Before 7 if you want to be sure of a space in high season: in the worst quarter of the days we observed, the car park was already full by then. Otherwise after 12, when space returns on average, bearing in mind that the afternoon limits what you can walk and brings the storms.
Does avoiding the weekend actually help?
Far less than people think. Between a Saturday and an ordinary Wednesday the difference is 48 minutes on the fill time. In the first six days of August the car park filled every day, weekdays included. Tuesday is statistically the freest day, but it still saturates on 3 days out of 10.
Where do you park if the Passo Sella is full?
Plan de Gralba, 400 spaces, saturated only 5 times in 65 days, and Monte Pana, 340 spaces, once. Val Gardena is not short of parking: demand simply concentrates on one point. From either you reach the area by public transport or with a longer walk.
Where does this data come from and is it reliable?
From the open data portal of the Autonomous Province of Bolzano, which publishes free spaces in real time under a CC0 licence. We record the time series, which the source does not keep. We excluded 69 days on which a sensor read zero even at night, because that figure was not plausible.
Can I use this data for my work?
Yes. It is published under a CC BY 4.0 licence and downloadable in an open format: you may reuse it commercially too, citing leDolomiti.it as the source. For extracts or different cuts, write to us.
When does the full season assessment come out?
At the end of September, once we have the whole summer recorded. It will cover the absolute peak, the month-by-month comparison and the real difference between high season and September. In the meantime we update this page every week.