Road trips × Onsen & Sauna · All Japan (beta)日本語

Yukemuri TouringBy car or motorcycle — onsen and saunas in your own ride

A navigator for onsen and sauna trips in your own car or on your own bike, instead of by plane or bullet train. Get a route, estimated fuel, toll and ferry costs, and onsen inns and saunas near your destination.

Beta version covering all of Japan. Hokkaido and Okinawa are reached by ferry. We only list onsen inns and saunas whose opening status and location we have checked (as of October 2026).* This site uses affiliate advertising (PR).

News & Touring Diary

Vehicle and destination

Vehicle

Start

Destination

Tap to open a map. To type, tap "⌨ Type a place name" above the map.

Trip

Day trip Overnight

Route type

Local roadsNational & prefectural roads ExpresswayWith estimated ETC toll

More settings

Round trip (include the way back and its fuel)

Ferry fare class (when taking a ferry)

Defaults are typical for each vehicle type. Adjust them to match yours.

Fuel economy (km/L)

Fuel

Regular (¥/L)

Premium (¥/L)

Diesel (¥/L)

Default prices are estimates for September 2026.

Routes and costs are estimates. Always follow road signs and the latest road information.

Route

Route numbers are shown as on Japanese road signs.

Sketch map — road shapes are not exact

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* If the Jalan app opens, please book in your browser (such as Safari) instead. Bookings made in the app are not counted as coming from this site.

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Services to use before your trip or on the road.

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How it works, operator & disclaimer

How it works

Routes: we pick the route through a network of about 250 key places across Japan connected by national and prefectural roads (Honshu, Shikoku and Kyushu are linked by bridges and tunnels), preferring the bigger roads that suit touring. Mountain roads count as 1.2× their length and national roads with narrow sections (Nukumi Pass, Mt. Koya, Totsukawa, etc.) as 2.2×, so they are only used when there is no other way. Each leg's distance is the straight-line distance multiplied by a curve factor. Scenic-road marks are the author's own picks.
Schedule: nights left empty are spent at the destination. If you choose towns to stay in on the way, the plan stays there (riding time per day differs from person to person, so we do not split days automatically). A long-distance ferry counts as one night on board; if you entered fewer nights than that, the plan is corrected.
Driving time: local roads average 28 km/h in towns, 40 km/h in the countryside and 32 km/h in the mountains; expressways 87 km/h for all vehicles. Breaks are not included.
Fuel cost: distance ÷ fuel economy × price per liter. Defaults: regular ¥172, premium ¥183 (September 2026 estimates based on the Agency for Natural Resources and Energy survey and others), diesel ¥160 (September 2026 national average). Fuel economy is assumed to be the same on expressways.
Refueling: one full tank is assumed to cover 80% of the typical tank capacity × fuel economy. Gas stations are scarce in the mountains and many close at night, so fill up early.
Expressway tolls: an ETC estimate using the NEXCO formula (¥24.6 per km × vehicle factor [kei & motorcycles 126 cc+ 0.8, standard car 1.0, mid-size 1.2, large 1.65, extra-large 2.75] + ¥150 terminal charge, 25% off beyond 100 km and 30% off beyond 200 km, 10% consumption tax, rounded to ¥1). Holiday and late-night discounts are not included.
Expressway routes: we do not have expressway or interchange data, so expressway distance is estimated from the local-road distance (≈ 0.8–0.95 × local distance, plus about 10 km of ordinary road at each end). Actual interchanges, distances and tolls will differ. Urban expressways (Shuto, Hanshin, etc.) are not included. No expressway estimate under 40 km.
Bridges, tunnels and ferries: the Seto-Ohashi Bridge, Shimanami Kaido, Akashi-Kaikyo & Onaruto bridges (via Awaji Island) and the Kanmon Tunnel charge tolls (not included). On these routes Google Maps opens without "avoid tolls". For Hokkaido and Okinawa we choose among the main ferry lines (Aomori, Oma, Muroran, Hachinohe, Oarai, Sendai, Nagoya, Niigata, Tsuruga, Maizuru, Otaru, Tomakomai, Kagoshima, Naha), treating time on board as distance at 40 km/h. Fares are the cheapest-season one-way fares checked on each operator's official fare table on October 2, 2026 (Taiheiyo Ferry: published by the Japan Long Course Ferry Service Association and others). One driver is assumed; peak surcharges, discounts and fuel-surcharge changes are not included. One hour is added per boarding. Islands without bridges are reached by regular ferries that carry cars and motorcycles (fares checked on each operator's official fare table; the Ie and Kume Island routes could not be checked officially and use estimates from private guides). Islands without such ferries (Izu Islands, Miyako, Yaeyama, etc.) cannot be selected.
Open in Google Maps: local-road routes open with "avoid highways and tolls". The Google Maps app accepts only three waypoints, so long routes may differ slightly (opening each day separately is closer).
Onsen and sauna information is as of writing. Check opening days, prices and whether motorcycles can park on the official sites. Road closures and winter ice are not reflected.
Ads: links marked "Ad (PR)" are affiliate links. If you book or sign up through them, the operator receives a commission (your price does not change).

Operator, contact & feedback

Site: Yukemuri Touring (beta, all Japan)
Established: October 1, 2026
Operator: Yukemuri Touring Editorial Team (run by an individual who loves motorcycles and cars)
Contact: Contact form (coming soon)

Settings such as fuel prices and route type are saved only in your browser (localStorage) and are never sent to our servers. Start and destination are not saved. Clearing your browser data removes them.
"Ad (PR)" links take you to affiliate networks (ASPs) or advertisers, which use cookies and similar tools to record bookings as the operator's referrals. Their privacy policies apply.
To display fonts (Google Fonts), your device's IP address and similar data are sent to Google. "Open in Google Maps" takes you to Google's site.
Words you type as start or destination are sent to OpenStreetMap (Nominatim) and the Geospatial Information Authority of Japan only when the place is not in our list. Search results © OpenStreetMap contributors and others.
When Google route distances are enabled, the coordinates of your start and destination are sent to Google.
We do not use analytics at present. If we add them, we will update this section.
Anything you send through the contact form (Google Forms) is used only to reply and improve the site, and is not shared with third parties except as required by law.
External transmission (Japan's Telecommunications Business Act): this site sends information from your device (IP address, page viewed, browser type, etc.) to: ① Google LLC (Google Fonts) to display text; ② the OpenStreetMap Foundation (Nominatim) and the Geospatial Information Authority of Japan when searching place names; ③ Google LLC when you use "Open in Google Maps" or the contact form; ④ affiliate networks (A8.net, operated by FAN Communications, Inc., etc.) and advertisers when search results are shown (to count ad views) and when you click an "Ad (PR)" link. Their privacy policies apply.

Disclaimer

Routes, distances, times and costs shown are estimates. To the extent permitted by law, the operator is not responsible if actual roads or prices differ.
Opening days, prices and facility information are as of writing. The map drawing and road distances are approximate data prepared by hand and may contain errors. Onsen and sauna opening status can change.
Checking road conditions (closures, winter closures, ice, weather, and areas still affected by disasters such as the Noto Peninsula) and obeying traffic rules are the user's responsibility.
To the extent permitted by law, the operator is not liable for any damage arising from use of this site.

Data sources

Opening status, locations and bathing hours of onsen and saunas were checked against each facility's official site, Super Sento Zenkoku Kensaku, Wikipedia (via Weblio), Mapion and Sauna Ikitai (October 2026). Facility descriptions are written by the operator.
Ferry fares are from each operator's official fare table (Taiheiyo Ferry: Japan Long Course Ferry Service Association and others; Ie and Kume Island routes: private guides); fuel prices are estimates based on the Agency for Natural Resources and Energy survey and others.
The list and locations of municipalities are adapted from "Geolonia Address Data" (CC BY 4.0); locations are approximate.

Copyright and all other rights in this site's text, photos, illustrations, map drawings, design and program, and in the onsen, sauna, road-network and ferry data researched, selected and compiled by the operator, belong to the Yukemuri Touring Editorial Team.
Copying, reposting, modifying, redistributing or publishing beyond what copyright law allows (private use or properly credited quotation) is prohibited without permission.
Using this site's content or data to build similar sites, apps or services, collecting data automatically (scraping), and any act that interferes with operation are prohibited.
If we find a violation, we may request removal and take legal action.
You are free to link to this site (no need to ask). When quoting, please credit "Yukemuri Touring" and include the URL.