At Torii-toge Pass (Nagano Prefecture) situated between Narai-juku and Yabuhara-juku, dividing the Japan Sea (the Shinano River System) from the Pacific Ocean (the Kiso River System) and Magome-toge Pass located between Tsumago-juku and Magome-juku, maintenance work is currently underway to turn the pathes into nature trails.
また、奈良井宿と藪原宿の間にあり、日本海（信濃川水系）と太平洋（木曽川水系）の中央分水嶺でもある鳥居峠(長野県)や、妻籠宿と馬籠宿の間にある馬籠峠では、自然遊歩道としての整備が進められている。