Exploring Karuizawa’s Train Stations. Karuizawa is home to key train stations that provide convenient access throughout Japan. The main hub, Karuizawa Station, offers high-speed Shinkansen connections, linking travelers to Tokyo, Nagano, and beyond. With its strategic location, Karuizawa Station ensures quick and comfortable journeys. Additionally, Naka-Karuizawa Station caters to local travel needs with frequent regional services. Both stations are equipped with modern facilities, including tourist information centers, ensuring a seamless travel experience.