Japan National Route 20 is a major highway that runs through the central part of Honshu, the main island of Japan. Stretching approximately 300 kilometers, it connects the cities of Tokyo and Nagoya, facilitating travel and commerce between these two important urban centers. The route passes through various landscapes, including mountainous regions and rural areas, showcasing the natural beauty of Japan. It serves as a vital transportation link, providing access to several attractions and local communities along the way, making it an essential part of the country's road network.