Elevation 135–349 m (gain 214 m)
Registered on OpenStreetMap as accommodations open to the general public.
| Name | Booking | Straight-line distance from the road |
|---|---|---|
| 北海道岩内サウナ＆ヴィラＨＩＢＩＫＡ | 楽天トラベル (Rakuten Travel) | 2.24km |
| コテージアリスの里 | 楽天トラベル (Rakuten Travel) | 2.37km |
| ＲＡＩＤＥＮ ＲＥＳＯＲＴ ＆ ＳＰＡ ａｔ Ｉｗａｎａｉ | 楽天トラベル (Rakuten Travel) | 2.50km |
| C-9 | − | 2.53km |
| C-8 | − | 2.55km |
| C-7 | − | 2.56km |
| C-6 | − | 2.58km |
| C-5 | − | 2.59km |
| C-4 | − | 2.61km |
| C-3 | − | 2.62km |
| C-2 | − | 2.63km |
| C-1 | − | 2.64km |
Registered on OpenStreetMap as bathing facilities. A “−” in the onsen column only means OSM records no spring type — it does not mean the bath is not an onsen. Some communal baths are reserved for locals or staying guests.
| Name | Onsen on OSM | Straight-line distance from the road |
|---|---|---|
| サンサンの湯 | − | 2.54km |
Accommodation & bath locations and onsen records: © OpenStreetMap contributors (ODbL) / retrieved 2026-09-02
Names and locations of places listed on the booking site, and the links to them: Rakuten Travel API / retrieved 2026-09-01
Road locations: © OpenStreetMap contributors (ODbL) / retrieved 2026-08-22
Elevation: GSI Japan DEM10B (sampled every 50 m)
Municipality: GSI reverse geocoding at road endpoints (not the address of each facility)
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