Japan's public transportation is amazing, but reaching outdoor crags deep in the mountains usually means a rental car. Here's the complete guide to renting, hacking transit, and beating the walls that trip up visitors.
Heading to Ogawayama or Mizugaki? Renting a car is your most realistic option — basically mandatory with a group and pads to haul. Japanese toll roads are expensive, so get an "ETC Card" (Electronic Toll Collection) — tourists can't issue their own, but rental companies lend one for about 330 yen/trip.
Bottom line: weekend or before-4AM departures make the 330-yen ETC rental a total no-brainer.
On Rentalcars.com, ETC add-on isn't in checkout — email or call the Japanese office right after booking to hold one. Klook usually lets you check an "ETC Card included" box directly.
Japan only accepts International Driving Permits issued under the 1949 Geneva Convention. A "1968 Vienna Convention" IDP (common in some European countries) means you cannot drive here. Check before you leave home — if your country isn't in the 1949 convention, you'll need an official Japanese translation via JAF.
Taking a crash pad on the Shinkansen? If your luggage's total dimensions (length+width+height) exceed 160cm — true of almost every pad — you must reserve a seat with an oversized baggage area in advance. Skip it and risk a 1,000-yen penalty or being denied boarding.
Buying paper tickets every ride is a pain — get a Suica or PASMO. Due to a chip shortage, physical card sales are restricted. iPhone users: add a digital Suica/PASMO to Apple Wallet. Android or physical-card preference: grab a "Welcome Suica" or "PASMO PASSPORT" at the airport station (valid 28 days).
Driving straight out of central Tokyo means brutal highway traffic. Instead, take a Shinkansen or Limited Express to a station near the crag — Sakudaira for Ogawayama, Kofu for Mizugaki — and rent your car right there. You get your JR Pass benefit, skip Tokyo traffic entirely, and only drive quiet country roads.