Fastest Steam Train

The Number 4468 Mallard is recognized as the fastest steam train. The Mallard is a London and North Eastern Railway Class A4 4-6-2 Pacific steam locomotive. On July 3, 1938, the Mallard was clocked at 125.88 mph (202.58 km/h). Mallard's world record has never been officially exceeded by a steam locomotive, though German locomotives came very close. Other locomotives that may have exceeded the .