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Unnokuchi Castle: Day Trip from Tokyo (121 km) – Location & Nearest Station

Last updated: 2026-09-17

Unnokuchi Castle is a castle in Nagano Prefecture, about 121 km in a straight line from Tokyo Station. That distance puts it within day-trip range of Tokyo for most travellers, depending on train connections.

TypeCastle
Name in Japanese海ノ口城
LocationNagano Prefecture
Nearest station (straight line)Saku-Uminokuchi Station – about 2.1 km
From Tokyo Stationabout 121 km (straight line)
From Nagoya Stationabout 175 km (straight line)
From Kyoto Stationabout 274 km (straight line)
Coordinates36.03861, 138.50022
MapOpen in Google Maps

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Source: location data from Wikidata (CC0). Distances are calculated by this website.

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We are working to carry Japanese craft and everyday culture beyond Japan, by building Japan Towns with local partners. Read the plan, or tell us if it resonates.

Read the Japan Town →