It’s mostly ridable; there’s a bit of a carry across a beck where the bank no longer meets a footbridge (winter storm damage), and there’s a push/carry for a couple of minutes near the end; up to the Blencathra Centre.
Rosthwaite up honister. Then wharnscale bottom and then up through Rigg beck
There a nice descent from the back of Fleetwith Pike down to the farm a Warnscale (it’s a bridleway on the map). Then follow the road into Buttermere, past the turn off for Newlands. Just after the village there’s footpath on the right; takes you up Sail Beck which becomes Rigg Beck. Rigg Beck suffered a fair amount damage in the storms so it’s a bit trashed at the moment.