TIL Shanghai Maglev train has a maximum cruising speed of 431 km/h (268 mph), making it the fastest train service in commercial operation. It takes about 4 minutes to reach max speed.

https://en.wikipedia.org/wiki/Shanghai_maglev_train

https://www.reddit.com/r/todayilearned/comments/15rf9b0/til_shanghai_maglev_train_has_a_maximum_cruising/