Sun Valley - Bald Mountain is a ski area in United States. The terrain spans roughly 2375–2375 m above sea level. The mapped ski area covers about 6.4 km². Within 2.3 km of the centre, the map shows 159 marked runs and 12 lifts, totalling about 97 km of piste. Over the last three winters the ERA5 reanalysis gives it 190 cm of snowfall a season, 1171st (tied) of the 3,112 ski areas we measure worldwide. The model runs well below what resorts report, so the ranking is the meaningful part rather than the centimetre figure. 1 official live camera is linked below. 6 other ski areas lie within 120 km. Snow figures and the Powder Score are recalculated every day.
Elevation range is estimated by sampling points across the ski area.
We do not show a snow depth here. The weather model we use reports snow lying on the ground — it knows nothing about grooming or snowmaking, and it is not the base depth a ski area publishes. In Japan we can check our figures against 234 weather stations. Outside Japan there is nothing to check them against, so we do not print a number we have not verified. Snow report on the official site ↗
Score breakdown
Powder Score v1.0.0
7-day outlook
| Date | Snow | Temp | Wind |
|---|---|---|---|
| ☁️ 26 Sept | 0 | 1.7 / 11 | 18.2 |
| ☁️ 27 Sept | 0 | 4.8 / 14.8 | 21.5 |
| ☁️ 28 Sept | 0 | 6.1 / 15.3 | 14.8 |
| ☁️ 29 Sept | 0 | 3.5 / 17.9 | 11.5 |
| ☀️ 30 Sept | 0 | 6.2 / 19 | 13.7 |
| ☀️ 1 Oct | 0 | 6.3 / 19.9 | 12.3 |
| ☁️ 2 Oct | 0 | 4.9 / 19.6 | 22 |
Runs and lifts
Counted from the runs and lifts drawn on OpenStreetMap, within the boundary of the ski area. These are not the resort’s own published figures.
Run map
The shape of the mountain
Which way the slopes face
87% of the vertical on the runs descends to the north or east. Those slopes get the least sun, so the snow lasts longer.
By difficulty
Lift types
- Chairlift10
- Gondola1
- Magic carpet1
See past trail maps on Skimap.org ↗
Source: OpenSkiMap (© OpenStreetMap contributors, ODbL 1.0). How finely ski areas are drawn varies by region, so treat the counts as indicative. Vertical is the difference between the highest and lowest points of the mapped runs and lifts.
Live Cameras
Footage remains the copyright of each operator. JAPANSNOWLINE neither stores nor redistributes it.
How much snow it gets
Measured by us across 3,112 ski areas by one identical method. These are not the resort’s own published figures.
Compared with what is nearby
Within 50 km straight line. Measured the same way, so the ranks compare directly. Ski areas a few kilometres apart share a weather grid cell and can return the same figure.
| Ski area | Distance | Seasonal snowfall | World rank |
|---|---|---|---|
| Sun Valley - Dollar Mountain | 4.5 km | 167 cm | 1371 |
| Rotarun Ski Area | 19 km | 133 cm | 1772 |
| Soldier Mountain Ski Area | 41 km | 230 cm | 872 |
When it falls, and how winters differ
Month by month
Month by month, the most snow falls in December. March brings as much as January, or more. In amount, March brings 45 cm, more than the median of 30 cm.
Map
Where it sits relative to nearby resorts. For a piste map, see the official site.
Official piste map ↗More places to look
Updated: 26 Sept 2026, 23:28