While most Shinkansen currently operate at a maximum of 300 kph (186 mph), the E5 “Bullet Trains” of Japan Railways East (JR East) run at up to 320 kph (200 mph) on the Tohoku Shinkansen, which runs north from Tokyo to Shin-Aomori.
How fast can high-speed rail go?
Maximum achievable running speed in excess of 200 km/h (124 mph), or 250 km/h (155 mph) for very high-speed, Average running speed across the corridor in excess of 150 km/h (93 mph), or 200 km/h (124 mph) for very high-speed.