The Jacobite Steam Train, hauled by a former LNER K1 or LMS Class 5MT locomotive, travels the scenic two-hour run between Fort William and Mallaig. Classed as one of the great railway journeys of the world, the route crosses the historic Glenfinnan Viaduct, made famous in the Harry Potter films – the Jacobite's owners supplied the steam locomotive and rolling stock used in the film.
Trains depart from Fort William train station in the morning and return from Mallaig in the afternoon. There's a brief stop at Glenfinnan station, and you get 1½ hours in Mallaig.