The Akita Shinkansen Komachi from Tokyo, Sendai and Morioka makes a regular stop at the JR Kakunodate station. Komachi provides hourly service from Tokyo and the journey takes roughly 4hrs from Tokyo, 2.5hrs from Sendai and 1hr from Morioka. Please make sure to book your seat in advance, as seats on all Komachi trains are all reserved. Japan Rail Pass is accepted
