Observed arrival · 2026-09-25
A calendar for Japan’s seasonal mountain-road closures
This route-by-route calendar lists winter closure and spring reopening dates for mountain and highland roads in Japan.
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✦Pretty
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◎Niche
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ƒJS
- For
- Drivers planning trips across Japan’s mountain routes
- Worth noticing
- Its month-by-month calendar covers 32 routes, but the dates currently displayed are explicitly last year’s results.
Field notes
The listings can be filtered across regional and prefectural groupings, and the calendar lays dates out from October through July. Examples include Shiretoko Pass, the Zao Echo Line, and the Venus Line; the page describes its data as last year’s results and says this season’s prefectural announcements are expected from October. Its meta description says route entries include sources and confirmation dates.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
◎NicheUnusually specific use
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