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How Big Are Japan's Ski Areas? Smaller Than the Alps, Snowier per Kilometre
Measured across nearly 1,800 ski areas: the median Japanese one has 12 km of piste against France's 25. What Japan has instead is 25 cm of seasonal snow for every kilometre of run — more than two and a half times France and three times the United States.
The pictures do Japan no favours. Bottomless snow, empty trees, a skier disappearing to the chest, and nothing in the frame to tell you how big the mountain is.
It is smaller than you think. We measured the mapped run network of 2,888 ski areas, and the size gap between Japan and the Alps is not close.
The median Japanese ski area is half the size of the median French one
| Ski areas | Median piste length | Median seasonal snowfall | |
|---|---|---|---|
| Sweden | 34 | 26 km | 134 cm |
| France | 182 | 25 km | 253 cm |
| Austria | 183 | 23 km | 235 cm |
| Italy | 141 | 23 km | 189 cm |
| United States | 360 | 19 km | 138 cm |
| Switzerland | 164 | 18 km | 284 cm |
| Canada | 117 | 15 km | 155 cm |
| Norway | 50 | 13 km | 220 cm |
| Japan | 182 | 12 km | 307 cm |
Of the big skiing countries in the table, Japan is last on size and first on snow.
At the top end the gap becomes absurd. Japan’s largest mapped network is Niseko Grand Hirafu at 65 km. The largest in the world is Les 3 Vallées in France at 971 km — fifteen times larger. Paradiski, also French, has 553 km. Nothing in Japan is within an order of magnitude.
Only 26 of Japan’s 182 ski areas — 14% — are bigger than the median French one.
What Japan has instead: snow per kilometre of run
Divide a season’s snowfall by the length of the run network and you get a number nobody publishes: how much snow falls onto each kilometre of piste.
| Snow per km of piste | |
|---|---|
| Japan | 25 cm |
| Norway | 20 cm |
| Switzerland | 15 cm |
| Canada | 11 cm |
| Austria | 10 cm |
| France | 10 cm |
| Italy | 8 cm |
| United States | 8 cm |
| Sweden | 6 cm |
Japan gets more than two and a half times as much snow per kilometre of run as France, and three times the United States.
That is what the photographs are actually showing. Not a vast mountain — a small one, buried.
Why this matters more than the size number
A big resort and a snowy resort are answers to different questions, and it is worth knowing which one you are asking.
If your week is about covering ground, Japan will disappoint you. Twelve kilometres of marked piste is a morning. There is no equivalent of linking six valleys before lunch, and the lift networks are simple by design — the median Japanese ski area runs 7 lifts against France’s 11.
If your week is about the snow itself, size stops being the point. Fresh snow is a resource divided among the people on the hill, and Japan’s ratio of snowfall to terrain is the best in this table by a wide margin. Small mountains that get buried repeatedly behave very differently from large mountains that get buried occasionally.
This also explains something visitors notice and cannot place: in Japan you tend to ski the same runs many times in a week, and it does not feel repetitive. The run is not the same run. It snowed again.
The twelve that are both
If you want size and snow, the overlap is narrow. These are the Japanese ski areas with more piste than the median French resort and more than 400 cm of snow a season:
Maiko Snow Resort · Seki Onsen · Tsugaike Kogen · Hakuba Iwatake · Hakuba Norikura · GALA Yuzawa · Yuzawa Kogen · Kagura · Nozawa Onsen · Tashiro · Madarao Kogen and Tangram Ski Circus (one linked network, mapped twice) · Hakuba Happo-One
Twelve out of 182. If somebody has told you that Japan is all deep snow and endless terrain, this is the list they were describing, and it is 7% of the country’s ski areas.
How this was measured
Run lengths are the total of every marked downhill run drawn on OpenStreetMap within a radius of each ski area’s centre that scales with its mapped size. These are not the resorts’ own published kilometres and will not match them. Resorts measure differently from one another and generally more generously; what makes the comparison work here is that all 2,888 were measured the same way. The run networks were read from OpenStreetMap at the end of August 2026; the snowfall beside them is the current twelve-winter figure.
Snowfall is the twelve-winter mean from the ERA5 reanalysis, again computed identically for every ski area. The model understates mountain snowfall everywhere, so the absolute centimetres run low, but the ratio between countries is unaffected, because the same understatement applies to all of them.
One real limit on the ratio. Snow per kilometre of piste is the supply side only; how quickly fresh snow gets tracked out also depends on how many people are on the hill, and we do not hold visitor numbers. The figure tells you how much snow there is per unit of terrain, not how long it survives.
Ski areas with fewer than ten marked runs are excluded, along with countries with fewer than fifteen qualifying ski areas. Linked networks that sell one lift pass are counted as one ski area where OpenStreetMap draws them that way, which is why Les 3 Vallées appears as a single entry.
Sources: Open-Meteo historical weather data, based on the ERA5 reanalysis (Copernicus Climate Change Service); OpenSkiMap, map data © OpenStreetMap contributors (ODbL).
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