Shiga Round Trail / Shiga Ichi (Japan)
The Shiga Round Trail, popularly known as Shiga 1 ("Shiga Ichi"), is one of the longest and toughest trails in Japan, forming a full 438-kilometer loop with 28,300 meters of elevation gain (when done counter-clockwise) around the perimeter of Shiga Prefecture - home to Japan's largest and most spectacular lake - Lake Biwa.