Name: Biwa-ko Japanese name: 琵琶湖 Location: Shiga Prefecture (滋賀県) Shore length: 146.1 mi / 235.2 km Area: 258.8 mi² / 670.3 km² Difficulty: Easy-Moderate Lake Biwa (琵琶湖) is the largest lake in Japan and is located in Shiga Prefecture. It's 8 mi / 13 km east of Kyoto (a city in Japan you've