The Okayama to Mishima route is primarily served by the Shinkansen, specifically the Hikari and the Kodama services. The Hikari Shinkansen offers a swift journey, reaching speeds of up to 285 km/h (177 mph), and typically completes the trip in about 3 hours. This train provides a direct connection with limited stops, making it a preferred choice for many travelers. On the other hand, the Kodama Shinkansen, while slower at speeds of around 240 km/h (149 mph), takes approximately 3 hours and 30 minutes to cover the same distance due to its more frequent stops at various stations along the route. Both types of Shinkansen feature Ordinary and Green class seating, ensuring travelers have comfortable options. The Hikari is best for those aiming for efficiency, while the Kodama may suit those looking to explore more regional areas during their journey.