What Is the Hakuba Side of Chubu-Sangaku National Park? Mountains, Seasons and Park Rules
This guide is for visitors who see the high peaks behind Hakuba and want to know what they are. Those mountains belong to Chubu-Sangaku National Park, which covers the Northern Alps. Here we explain what the park is, what the Hakuba side looks like in each season, how people usually get up there, and the rules that apply.
We used pages from the Ministry of the Environment, the Japan Tourism Agency, the JNTO national parks site, Nagano Prefecture and its tourism board. We read them on 3 October 2026. Trail conditions, lift seasons and rules can change, so check the latest notices before you go.
What the park is
The Ministry of the Environment describes Chubu-Sangaku as a mountain park that takes in the whole Northern Alps. It was designated on 4 December 1934, as one of Japan's first national parks. It covers 174,323 hectares across Niigata, Toyama, Nagano and Gifu prefectures.
The park is made up of mountains of around 3,000 metres. The ministry names four groups: the Ushiro-Tateyama range, which includes Mt Shirouma, the Tateyama range, the Hotaka range and Mt Norikura in the far south. Hakuba sits below the Ushiro-Tateyama range, in the northern part of the park.
The name "Japanese Alps" has a foreign link. The ministry says the English engineer William Gowland named these mountains in the Meiji era. The missionary Walter Weston later made them known abroad through his books.
Mt Shirouma and the Hakuba Daisekkei
The Nagano tourism site gives Mt Shirouma a height of 2,932 metres. It is one of the Hakuba Sanzan, the three peaks of Hakuba, along with Mt Shakushi and Mt Hakuba-Yari.
The name comes from a horse shape that appeared in the melting snow. Farmers saw it as a plough horse, called it "shirokaki uma", and the name became "Shiro Uma". The same written characters can also be read "Hakuba".
A popular route to the summit climbs the Hakuba Daisekkei, a valley filled with snow. Nagano's tourism site gives it a length of 3.5 km and a climb of 600 metres. The ministry lists it as one of Japan's three great snow valleys. The full hike from the Sarukura trailhead takes 9.8 hours, so an overnight stay is recommended. To reach Sarukura, take the Sarukura line bus from Hakuba Station, about 27 minutes, or a taxi.
What you can see, season by season
- Early summer: JNTO says snow covers much of the park until the early summer months. In the Daisekkei valley near Mt Shirouma, snow lies all year.
- Summer and the green season: the Japan Tourism Agency says the green season usually runs from June to October. JNTO lists summer activities in the Hakuba area such as fishing, canyoning, mountain biking and hot-air ballooning.
- Alpine flowers: the ministry says the Mt Shirouma area is known for its rich alpine plants. Several plants take their names from the mountain, such as Shirouma-asatsuki and Shirouma-rindo.
- Autumn: JNTO says the trailhead areas reached by public transport, including Happo, are especially striking in autumn.
- Winter: JNTO notes that the Hakuba region has many fans among winter sports enthusiasts. Going beyond the ski areas into the backcountry needs its own preparation, which our safety guide covers.
Plant life changes with height. The ministry describes Siberian dwarf pine and flower fields above about 2,500 metres. Between about 1,500 and 2,500 metres there are subalpine conifers and birch. Beech and oak forests grow lower down.
Easy ways up: Happo-one and Tsugaike
You do not have to climb a 3,000-metre peak to see the park. Two areas above Hakuba are reached by lifts or cable car.
The Japan Tourism Agency describes a walk on Happo-one that passes through the national park. It starts at the top of the Happo Alpenline and Kurobishi lift lines. After about 90 minutes uphill you reach Happo Pond, at 2,060 metres. The Hakuba Sanzan peaks can be seen reflected in the water.
The same text says the endemic alpine plants along this trail are designated Natural Monuments of Nagano Prefecture. With luck you may see Japanese serow or rock ptarmigan.
JNTO describes Tsugaike Nature Park, near Mt Shirouma, as a nature preserve reached by cable car. Raised wooden walkways make it easier to explore. It lists Japanese wood poppies and peacock butterflies among the plants and insects there.
Animals you might meet
The ministry lists Asiatic black bears, Japanese serow, Japanese macaques and stoats among the park's mammals. Birds include golden eagles, mountain hawk-eagles, rock ptarmigan and spotted nutcrackers.
The ministry's English leaflet "Bears in the Northern Alps" says these bears are usually not aggressive. It adds that they may become aggressive once they learn to take food or rubbish. Keep food sealed, never leave it out, and make noise as you walk.
Park rules to follow
The ministry's notice for park users asks everyone to follow these rules:
- Do not drop litter.
- Do not pick flowers or plants.
- Do not feed or catch wild animals.
- Please do not smoke while walking, and do not bring pets.
- Do not ride bicycles or snowmobiles into the park.
- If you see a rock ptarmigan, do not chase it or step into the vegetation.
- Camping outside designated sites is prohibited.
- Check local conditions before a climb, carry a map, and turn back if you get lost.
- Before flying a drone, contact the landowner or manager and read the published guidance.
The same notice asks climbers to submit a climbing plan. In Nagano this is more than a request on many routes. Under the prefecture's mountain safety ordinance, you must file a plan to use its designated trails. The prefecture lists Mt Shirouma, Mt Karamatsu and Mt Kashimayari among the Northern Alps peaks covered.
Staying safe in the park
- Pick a route that suits your fitness and skills, and check the weather and trail conditions before you start.
- Submit a climbing plan for designated trails, and carry a copy on the day.
- In snow-filled valleys like the Daisekkei, Nagano's guidelines advise a helmet, crampons and poles as needed. Watch for falling rocks and avoid the thin snow in the middle of the valley.
- In an emergency, call 110 or 119 if your phone has signal. If it does not, contact the nearest mountain hut.
What we could not verify, and therefore left out
- Opening dates and fares for the Happo-one and Tsugaike lifts and cable cars in 2026. We did not read operator pages for them.
- Flower peak dates and autumn colour dates for specific places. No official page we read gave dates for 2026.
- Bus times for the Sarukura line. Only the 27-minute ride time appears in our source.
- The exact national park boundary on Happo-one and around Tsugaike.
- Details of mountain huts, which are private businesses.
Related guides
Sources
All URLs retrieved 2026-10-03.
- 公園の特徴 中部山岳国立公園 (Ministry of the Environment) — (designation date, area, prefectures, mountain ranges, snow valleys, vegetation zones, Shirouma plants, animals, Gowland and Weston)
- Climbing Mt. Shirouma and the Hakuba Daisekkei (Go! Nagano, Nagano Prefecture and Nagano Tourism Organization) — (height, Hakuba Sanzan, origin of the name, Daisekkei length and climb, 9.8-hour hike, Sarukura bus)
- Explore Chubusangaku National Park (JNTO National Parks of Japan) — (snow until early summer, year-round snow in the Daisekkei, autumn, summer activities, Tsugaike Nature Park)
- Trek Through the Chubu-Sangaku National Park (Japan Tourism Agency) — (green season June to October, Happo-one start point, 90 minutes, Happo Pond 2,060 m, Natural Monuments, serow and ptarmigan)
- Bears in the Northern Alps, English leaflet (Ministry of the Environment) — (bear behaviour and food advice)
- 利用上の注意 中部山岳国立公園 (Ministry of the Environment) — (park rules and manners, drone notice, climbing plan request)
- 登山計画書を届出しましょう (Nagano Prefecture) — (plan required on designated trails; Northern Alps peaks covered; check route and weather; carry the plan)
- Guidelines for Safe and Enjoyable Trekking (Nagano Prefecture) — (snow valley advice, 110 or 119, contact a hut if out of range)