Traveling from Onomichi to Atami involves a scenic route primarily serviced by the Shinkansen and local train services. The fastest option is the Hikari Shinkansen, which can reach speeds of up to 285 km/h (177 mph) on certain sections, although this particular route will require at least one transfer, usually at Hiroshima. The journey may take roughly 4 to 5 hours in total, depending on the transfer times.
In comparison, the Limited Express Shimonoseki train can be another viable option for travelers, providing a more direct route with fewer stops. This train typically travels at speeds ranging from 120 to 140 km/h (75 to 87 mph), and the total journey time can extend to about 6 hours.
Both train types offer comfortable seating with amenities such as food and beverage services, but the Hikari is the faster choice, while the Limited Express provides a direct connection for those wanting to avoid transfers.