RAW MTB Descent Off The Cairngorms. The Stuff Dreams Are Made Of!
This was a tiresome route and the first climb up the mountain from base camp was HARD even on an E-bike. I'd suggest get the lift to the top if you don't have an E-bike and go from there. The wind alone will destroy you otherwise.
You will have to hike a bike some sections on the way round!
Once at the top of the first peak it is really enjoyable and the views are unreal!