Climbing Grade ①
Basic skill level and physical strength level: From the Nagano Prefecture “Nagano Trail Guide by Grade”
〇The ability to read maps is the ability to find your current position on a map and identify a route to your destination.
〇Route-finding is identifying the safest route when there is no hiking trail or it is difficult to find the trail.
〇Thicket-wading is pushing back and wading through dense thickets of bamboo or shrubs while hiking.
|Physical strength level||1||2||3||4||5||6||7||8||9||10|
|Day trip possible||At least one night is required||At least one night is required||At least two or three nights is appropriate|
＜Notes of Caution＞
Please be careful as some mountains of physical level 4 (at least one night is appropriate) do not have mountain huts or places to pitch a tent along the route, and depending on the hiker, it may not be possible to descend the mountain before sunset.
Some mountains of physical level 3 (day trips possible) require a considerable amount of time to access the trailhead, which can make it difficult to complete the hike in one day. In that case, we recommend planning your hike with the assumption you will spend the night.
Some mountains are volcanoes or in the vicinity of volcanoes. Before climbing, please make sure to check volcano information and follow the given instructions.
Climbing Grade ②
事例：Mt. Shirouma-dake Snowy Gorge Climbing Route Physical strength level: 5 Technical level: C Difficulty level：★★★
Routes with a constant of 30 or higher are said to require spending the night, therefore these routes are generally planned as overnight trips.
Level of difficulty: The Japan Alps Guide Center has set its own difficulty levels based on climbing grade and with consideration given to the climbing route constant.
|First Time to Climb
The Japan alps
for The Japan Alps
|The Japan Alps Route
for the Experienced
|The Japan Alps
in The Japan Alps
Please remember this should only be used as a reference.
Difficulty levels are assessed in terms of physical strength required and difficulty of the route’s unique terrain characteristics in snow-free and good weather conditions.
In addition to physical strength and difficulty level, actual mountain hiking involves a number of risks that can result from inclement weather, remaining snow, physical condition, or other random factors, so it is necessary to plan accordingly.
For example, a one-star mountain can become a five-star plus mountain if the weather turns bad, which means there is a level of difficulty that cannot be determined by the number of stars.
The Mt. Shirouma-dake Snowy Gorge Climbing Route has been assessed as a 4 on the physical strength scale and a technical level of C according to Nagano Prefecture’s grading scale, but the Japan Alps Guide Center has determined that more physical strength than average is required to climb the snowy gorge, and has therefore assessed the route with a 5 on the physical strength scale and a technical level of C.
The climbing route constant is 46.3 with a 3-star difficulty level.