From Bikepacking.com:"The Deeside Trail follows both banks of the River Dee as it flows from its source high on the sub-arctic Cairngorm plateau to the arable lowlands of Aberdeenshire in Scotland. This weekend route picks out technical and remote singletrack as it takes you through ancient pine forests and the heather and gorse covered hills of the Eastern Cairngorms."bikepacking.com/routes/deeside-trail