When traveling between Yamagata and Nan'yō, passengers can choose from several train options, including the limited express Yamagata Shinkansen and local services. The Yamagata Shinkansen provides a rapid journey with comfortable seating, ideal for those looking to reach their destination quickly. In contrast, local trains offer a more leisurely trip, allowing travelers to enjoy the scenic landscapes along the way, making them a great choice for sightseeing.