Corrour station is isolated. Very isolated. There isn't even a road there. It’s hard to fathom why there's a halt there at all. There is a bunkhouse. And a mile or so away, a youth hostel. And that's it.

To our great surprise, it is possible to take the Caledonian Sleeper from Euston, direct to Corrour. The service leaves Euston at 9:05pm (but cabins are available from 8:30). Travelling through the night, the service splits into three (for Aberdeen, Inverness and Fort William). We awoke passing Loch Lomond, to the throaty roar of a class 37 diesel, and found that we had reversed direction in the night without noticing - most disconcerting. The sleeper lounge is a great place to sit over a leisurely breakfast, watching the Highlands slip away past the windows. At Rannoch, I popped out to make sure the driver was stopping at Corrour (it's a request stop). At 8:52am, we bade goodbye to the sleeper at Corrour, and set off on our walk.

I thoroughly recommend the sleeper service. Twelve hours from Euston direct to a request stop in the middle of the Highlands. No messing about changing trains, waiting about on draughty platforms. Just a good night's sleep. The cabin is small, but bigger than a tent, and perfectly adequate. Staff are friendly. And it's not expensive. If you time it right, you can take advantage of Scotrail’s 'Bargain Berth' offer, just £49 single per person Euston to Corrour. But even the full Apex fare of £69 is comparable to the daytime rail fare.
[see http://www.scotrail.co.uk/sleepers.htm]