Just 80 minutes from Tokyo station to Echigo-Yuzawa station by the Joetsu Shinkansen (bullet train), and a 10-minute shuttle bus ride from Echigo-Yuzawa station. It is within one-day-trip distance from Tokyo area.
By free shuttle bus
Take a free shuttle bus from east exit of Echigo-Yuzawa station or Echigo-Yuzawa Onsen to Ishiuchi Maruyama.
Also we have a free loop bus which connects 3 entrances in Ishiuchi Maruyama.
Just a 5-minute drive from Shiozawa-Ishiuchi IC (Kan-Etsu Expressway).