Traveling from Karuizawa to Saitama, passengers can enjoy the services of the Hokuriku Shinkansen line. The Kagayaki Shinkansen, which operates on this route, reaches speeds of up to 260 km/h (162 mph) and makes the journey in approximately 1 hour and 15 minutes, providing a direct and efficient connection. The services also include the Wakuhō Shinkansen, which takes a bit longer, around 1 hour and 30 minutes, as it makes a few more stops along the way.
Passengers can choose between Standard and Green Cars, with the Green Car offering more spacious seating for those preferring additional comfort during their travel. Both train types come equipped with amenities such as power outlets and restrooms, ensuring a pleasant journey. The Kagayaki is particularly suited for travelers looking to minimize travel time, while the Wakuhō provides access to certain less-frequented stops.