The route is obvious, from the end of the road at High Salter above Roeburndale, to Slaidburn. Sixteen miles and 2355 ft ascent from Brookhouse via Winder and Haylot farms, or 1.5miles and 300 ft less from Hornby. My first outing, in the early 90's, on a hybrid bike, took an hour and a half more
North Harris mountain bike trip and eagle spotting.
There are only two decent off-road trips on Harris/Lewis, and this one is superb, if you want wilderness, mountain scenery of the highest order, and eagle spotting (golden and sea, if you're alert). It's a round trip of nearly 30 miles from Tarbert, therefore could be done between ferries from Skye,