What is the furthest place you can see from top of Ben Nevis?

From the summit of Ben Nevis, on a clear day, it is possible to see Northern Ireland and the Isle of Man. To the west, the Outer Hebrides and the mountains of Skye can be seen. To the east, the Cairngorms and the Grampian Mountains are visible. To the south, Loch Linnhe and the Firth of Lorne can be seen.