The best hikes and national parks in Japan

Ranked for a first or second trip, mixing easy valley walks with one or two summit options. Each pick is a base you can reach by train and bus without a car, and each has a wet-weather alternative nearby. Seasons, bus services and hut prices change year to year, so treat every date and cost below as a check before you book.

We aimed to rank parks and trail areas that a traveller can reach by scheduled train and bus, that have marked trails, and that offer a plan B when the weather turns. We weighted three things: how much of the walk is above the treeline or beside water, how easy the gateway town is to reach from Tokyo, Osaka or Sapporo, and whether a first-time visitor can finish a route in a day without a guide. Whether a given route is signed in English, and whether a bus runs in a given month, should be confirmed locally (check).

We left out places that need a car, a permit lottery or a multi-day mountaineering setup, and we did not rank by social-media fame. Where a park is known mainly for a single viewpoint, we say so rather than padding the list.

Japan's hiking season runs opposite to its sightseeing season. The high mountains of Chūbu, Tōhoku and Hokkaidō generally hold snow into June and reopen from late June to early July; they close again with the first autumn snow in October or November (check). Low trails near Kyoto, Nara and the coast are walkable almost year-round, but August heat and humidity make long ascents unpleasant, and September can bring typhoons (check).

Avoid Golden Week in late April and early May, Obon in mid-August, and autumn-colour weekends in October and November if you want quiet trails. Hokkaidō's Daisetsuzan is usually the first area to turn colour, roughly a month before the same change reaches Honshū (check).

Most parks have a gateway town with a station, then a seasonal bus to the trailhead. Kamikōchi is reached by bus from Matsumoto; Nikkō by train from Tokyo then bus to Lake Chūzenji; Daisetsuzan by bus from Asahikawa; Yakushima by ferry or flight, then local bus (check). Buses to high trailheads often stop running in winter, so check the season before you book a bed.

A nationwide rail pass often loses money on these routes, so buy point-to-point tickets and reserve seats on the long legs. Forward your main bag to the next city and carry a small pack for the park nights.