Dewa Sanzan: How to Walk Japan's Most Sacred Pilgrimage Route

The three mountains of Dewa Sanzan — Haguro-san, Gas-san, and Yudono-san — have been a site of religious practice for 1,400 years. Yamabushi, Japan's mountain ascetics, use the circuit as a rigorous physical and spiritual training ground. Ordinary pilgrims have been walking it since the 7th century. The mountains represent birth (Haguro), death (Gas-san), and rebirth (Yudono) — a complete cycle navigated on foot, in a single journey.

Today the route is accessible to anyone in reasonable walking fitness. The infrastructure — trails, mountain huts, shrines — is well-maintained. The spiritual intensity of the place does not require belief to be felt.

The Three Mountains

Haguro-san (羽黒山)

The most accessible of the three. A stone stairway of 2,446 steps ascends through 600-year-old cedar forest to the Five-Story Pagoda (Gojunto) — the most photographed site in Dewa Sanzan — and the mountaintop shrine complex. The ascent takes approximately 1 hour 30 minutes. The cedars, some of them over 500 years old, create a processional atmosphere that begins before the first step.

Haguro-san can be accessed year-round. The mountaintop is also reachable by bus for those who want the shrine without the ascent — but the ascent is the experience.

Gas-san (月山)

At 1,984 metres, Gas-san is the highest of the three and is snow-covered until July. The walking season runs from July to late October. The ascent from the 8th Station trailhead (accessible by bus in summer) takes approximately 3 hours to the summit shrine. The landscape above the treeline — volcanic rock, alpine flowers, views over the Sea of Japan — is unlike anywhere else in Tohoku.

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The summit shrine (Gassan Shrine) charges an entry fee and requires ritual purification (harae) before entering. White cotton robes for the purification are available at the shrine entrance for a small fee.

Yudono-san (湯殿山)

The most sacred and most restricted of the three. Photography is prohibited within the inner shrine area. The main object of worship is a large reddish rock covered with naturally hot spring water — a geothermal feature with no equivalent in Japan's other sacred mountains. What you experience at Yudono-san is not described even by those who have been there; the prohibition on disclosure is part of the pilgrimage tradition.

Access by bus from the Yudono-san parking area, then a short walk. The shrine is accessible from late May to November.

The Full Circuit

Walking all three mountains in sequence — Haguro, Gas-san, Yudono — takes two to three days depending on fitness and pace. The traditional route ascends Haguro-san (day one), climbs Gas-san (day two, with an overnight at the mountain hut or returning to the valley), and visits Yudono-san (day three or the afternoon of day two).

Mountain hut (sangoya) at Gas-san 8th Station accommodates overnight guests from July to October. Advance reservation recommended. Bring a sleeping bag; the hut provides blankets but temperatures at elevation drop significantly at night even in summer.

Shukubo: Staying in a Temple Lodging

Toge village at the base of Haguro-san has approximately 30 shukubo — traditional temple lodgings that have accommodated pilgrims for centuries. Staying in a shukubo includes a vegetarian pilgrim's meal (sansai ryori — mountain vegetable cuisine) and participation in the morning prayer ceremony at the Ōmiwa-jinja shrine.

The food at Haguro-san shukubo is among the finest vegetarian cooking in Japan: mountain vegetables, tofu, sesame, wild mushrooms, preserved vegetables, pickles, miso. No meat, no fish. The cooking tradition has evolved over centuries of feeding pilgrims. Book shukubo at least a month in advance; some accept online reservation.

Getting There

Take the Yamagata Shinkansen to Tsuruoka Station (Yamagata Prefecture). Buses run from Tsuruoka to Haguro-san (45 minutes), Gas-san (1 hour 30 minutes in summer), and Yudono-san (1 hour) — all operated by Shonai Kotsu. Bus schedules are reduced outside of July–October; check before traveling.

A rental car from Tsuruoka is the most efficient option for combining all three mountains in a single two to three day visit, especially if Gas-san and Yudono-san are both on the itinerary.

What to Wear and Carry

Haguro-san: comfortable walking shoes with grip (the stone steps are smooth and slippery in wet weather). Light layers. The cedar forest is cool even in summer.

Gas-san: proper hiking boots, rain gear, warm mid-layer even in July (summit temperatures can be 10–15°C below the valley). Trekking poles are useful above the 8th Station. The trail above the treeline is exposed to wind.

Water: drinking water is available at the Gas-san huts and at the Haguro-san mountaintop. Bring 1.5 litres minimum for Gas-san summit day.