The Cairngorm Mountain Railway, which opened in 2001, is the highest railway in the United Kingdom. The two-kilometre long funicular ascends the northern slopes of Cairn Gorm, the United Kingdom's seventh-highest mountain, serving the Cairngorm Mountain ski resort. The route and ski area are located within the Cairngorms National Park, the largest National Nature Reserve in Britain, located near Aviemore in the Highland area of Scotland. It is a Doppelmayr 120-SSB funicular railway.

Cairn Gorm is a mountain in the Scottish Highlands. It is part of the Cairngorms range and wider Grampian Mountains. With a summit elevation of 1,244.8 m (4,084 ft) above sea level, Cairn Gorm is classed as a Munro and is the sixth-highest mountain in the British Isles. The high, broad domed summit overlooking Strathspey is one of the most readily identifiable mountains from the nearby town and regional centre of Aviemore. Although it shares its name with the Cairngorm mountains, Ben Macdui is the highest mountain in the range.