Not the Munro itself (even though I did do it) but I managed to get the last of the tracks ridden in the area that Phil Clarke did a blog post about.

Basically from Culra bothy down to Loch Pattack then follow a brilliant stalker’s path alongside the Allt Cam before a good 90mins of hike-a-bike through peat hags until you pick up another estate track. Bumped it up to 50km by doing a loop around Loch Laggan (going past Ardverikie House as per The Monarch of the Glen TV series)