Traveling from Shiroishi to Oshu, the route is primarily serviced by the local and express trains operated by East Japan Railway Company (JR East). The limited express 'Tsubasa' variant connects these two cities efficiently. The Tsubasa train operates at speeds of up to 130 km/h (81 mph) and takes approximately 2 hours and 15 minutes to complete the trip, making a few stops at stations like Kurihara and Ichinoseki along the way.
For those looking for a more regular service, local trains also operate on this route, which may take longer due to additional stops. While there are no high-speed train services like Shinkansen on this particular route, the Tsubasa express provides a reliable and timely option for traveling between Shiroishi and Oshu. Onboard the Tsubasa, passengers can expect comfortable seating and scenic views of the Miyagi and Iwate landscapes.