Explore details about location 国道２０号. 国道２０号 is a location situated within the 甲州市 alongside other areas such as 白井甲州線, 休息勝沼線, 塩山勝沼線. Additionally, some smaller parts of 国道２０号 include specific areas like 大菩薩初鹿野線, 中央自動車道, 中央自動車道 (CHUO EXPRESSWAY) adding to the diversity of its landscape.