Japan's new maglev bullet train is now the fastest in the world Japan Railways' latest mag-lev bullet train just broke its own record as the fastest train in the world. The bullet train travelled at 603 kph(374 mph), blowing through last week's top speed of 590 kph(366 mph). At it's fastest, the train covered a mile in 10 seconds, which is insanely fast. This particular maglev train will be able to carry just over 900 passengers per trip as it levitates above the tracks using electromagnets to create a nearly frictionless ride