The West Highland Line (Glasgow–Fort William–Mallaig) is the hero route, voted the top rail journey in the world by Wanderlust readers in 2009 — ahead of the Trans-Siberian and the Cuzco–Machu Picchu lines. Its final stretch is where the steam-hauled Jacobite crosses the Glenfinnan Viaduct.
For 2026 the Jacobite runs 1 June–23 October (morning daily; afternoon 10 June–25 September), with returns at £76 standard / £116 first class plus a minimum £3.75 booking fee, booked only at westcoastrailways.co.uk — and it sells out fast, so book the moment you can.
Beyond the Jacobite, the Kyle Line, Far North Line, Highland Main Line, Borders Railway, the Glasgow–Oban line, the Caledonian Sleeper and the ultra-luxury Belmond Royal Scotsman together let you see almost all of Scotland's finest scenery from a train seat — most ScotRail single fares run just £25–£46.