Milwaukee Road class F7
The F7s are major contenders for the fastest steam locomotives ever built, as they ran at over daily. One run in January 1941 recorded by a reporter for "Trains" magazine saw achieved twice—in the midst of a heavy snowstorm. Baron Gérard Vuillet, a French railroading expert, once recorded a run between Chicago and Milwaukee where the locomotive reached and sustained an average for . However, the British locomotive LNER Class A4 4468 "Mallard" is officially accepted to be the world's fastest, with a run recorded at but authenticated at 126 mph in 1938.
Norfolk and Western 1218
Norfolk and Western No. 1218 is a steam locomotive that at one time was the strongest-pulling operational steam locomotive in the world. It is a four-cylinder simple articulated locomotive with a 2-6-6-4 (Whyte system) wheel arrangement. The Norfolk & Western Railway built it in 1943 at its Roanoke Shops in Roanoke, Virginia, and was part of the Norfolk & Western's class A fleet of fast freight locomotives. It was retired from regular revenue service in 1959, but Norfolk & Western successor Norfolk Southern Railway operated it in excursion service from 1987 to 1991. Today it is on display at the Virginia Museum of Transportation in Roanoke.