Traveling from Saitama to Joetsu can be accomplished via the Joetsu Shinkansen, specifically the Nasuno and Tanigawa services. The Nasuno service operates at speeds of up to 240 km/h (149 mph) and takes approximately 1 hour and 45 minutes to cover the distance, with a few stops including Ueno and Takasaki. On the other hand, the Tanigawa service, which also stops at key stations like Jomo-Kogen and Minakami, may take slightly longer, around 2 hours.
Both services feature reserved and non-reserved seating options for travelers, ensuring a range of choices for passengers. The Tanigawa, however, is generally favored by those looking to reach regions closer to the mountains, providing access to scenic areas and leisure activities. Both trains are equipped with onboard amenities such as vending machines and restrooms to ensure a comfortable journey. For those interested in exploring the picturesque landscapes of Japan, taking the Joetsu Shinkansen is an excellent option.