How to Climb Ben Macdui: Routes Across the Cairngorm Plateau

Ben Macdui is the second-highest mountain in Britain at 1,309 metres, beaten only by Ben Nevis, and it is the high point of the vast Cairngorm plateau. It is a very different mountain from the pointed peaks of the west: no dramatic summit spire, but an immense, subarctic tableland of granite and snow where the walking is straightforward and the navigation is anything but. Get a clear day and it is a magnificent, wild expedition; get cloud and it becomes one of the most serious navigational challenges in Britain.

The plateau route from Cairn Gorm

The shorter approach starts from the Coire Cas car park at the Cairn Gorm ski area. From here you climb onto the plateau — many walkers take in Cairn Gorm (1,245m) itself on the way — and then make the long, gently undulating crossing of the tableland to Ben Macdui, passing near the lip of Coire an t-Sneachda and Lochan Buidhe. It is around 18 to 20 kilometres round trip depending on your exact line, with a big day of 7 to 9 hours. The distance is modest for the height gained, but almost all of it is spent above 1,000 metres in a genuinely arctic environment.

The Linn of Dee approach

The longer but more scenic approach comes from the south, from the Linn of Dee near Braemar via Glen Luibeg and the Sron Riach ridge. It is a bigger distance — around 28 to 29 kilometres — but it travels through beautiful old Caledonian pine forest and wild glens, and it can be extended over Carn a'Mhaim or Derry Cairngorm to make a superb long round for strong walkers.

The real challenge: the plateau

The crux of Ben Macdui is not the ascent but the plateau itself in poor visibility. It is a huge, featureless expanse ringed by cliffs and cut by steep corries, and in cloud, driving snow or the frequent whiteouts it is extremely easy to become disorientated or to stray toward the edge of Coire an t-Sneachda or the Lairig Ghru. This is precise compass-and-pacing navigation of the highest order. Snow lies here well into summer, and in winter the whole plateau is a committing mountaineering environment with serious avalanche and cornice hazard — one of the most demanding places in the country for winter walking.

The Grey Man of Ben Macdui

No account of Ben Macdui is complete without Am Fear Liath Mòr, the Grey Man — a legendary presence said to follow walkers across the misty plateau, reported over the years as heavy footsteps, a feeling of dread, or a huge shadowy figure. Whatever you make of it, it captures something true about the place: this is a vast, lonely, atmospheric mountain where the imagination has room to work.

When to go and what to pack

Save Ben Macdui for a settled, clear day and you will not forget it. Treat it as a full mountain expedition even in summer: warm layers, full waterproofs, spare food, plenty of water, a head torch, and a map and compass with the skill to use them in a whiteout. Check the Cairngorm summit forecast carefully — conditions on the plateau are routinely far more severe than in Aviemore below. Log the climb in the Munros app, whose offline plateau maps and stored route are exactly the backup this mountain rewards.

Related guides

• Munro bagging in the Cairngorms — the wider region
• Navigation skills — essential for the plateau
• Cairngorms Munros — all the peaks nearby