The route from Osaki to Oyama is primarily serviced by the Tōkaidō Shinkansen trains, specifically the Hikari and Kodama services. The Hikari Shinkansen covers the distance at speeds of up to 285 km/h (177 mph), completing the journey in approximately 40 minutes with fewer stops at major stations such as Shinagawa and Atami. On the other hand, the Kodama Shinkansen, while offering a more leisurely experience, takes about 1 hour and 10 minutes to reach Oyama as it stops at all stations along the route, providing access to smaller towns.
Both trains feature Ordinary and Green class seating options, ensuring a range of comfort levels for passengers. The Hikari service is geared towards those aiming for a quicker travel time, while the Kodama serves passengers who may benefit from more frequent stops. Amenities like free Wi-Fi and refreshments are available on both train types, catering to the needs of modern travelers.