Level: HARD
Famous: The SNOW WALL
This path is known as the 'Roof of Japan' and it's a stunner, taking in sweeping meadows and the might of Mount Tateyama, one of Japan's most sacred mountains. The full route is about 90km long and most hikers normally use a combination of buses and cable cars to supplement their walking. You can start at Toyama to go on to Tateyama Station and beyond - the full route by public transport alone takes up to seven hours, but short hikes are available if you want a self-guided walk over the mighty Kurobe Dam, or photograph the view from Murodo over to Tateyama. When the weather is fine Tateyama can often be hiked on its own.
I've compiled a list of hiking trails for experienced and non-experienced hikers in the different regions of Japan. (75% of Japan is mountainous)