I think we did this and there is one off Scafell that is the longest in the lakes – its not very good either – not ridden it myself- if i am remembering correctly
Biggest vertical bridleway decent in England.
Depends what you define as ‘fun’, the top section is a flat out scree field, the middle bit is the same but with a long slalom of corners, then there’s another duller bit interspersed with rocky chutes, then it’s into the woods.
It’s not particularly singletrack, but it’s not completely without merit. Depends how fit you are as to whether it’s worth the climb or not.