In reply to charliehl:
Glenfinnan to Inverie is almost unsurpassable in these islands. Bothies, rocky canyons/glens, remote lochs, Glen Dessary forest, the high pass of Mam na Cloiche Airde. Lots of craggy hills to climb en route. Journey's end is camping on the shores of Loch Nevis with the Old Forge Inn nearby, and ride out next morning on the boat to Mallaig, then one of the great train rides of the UK back to Fort William.
Other great routes:
Blair Atholl - Aviemore / Braemar.
Kinlochewe - Dundonnell / Poolewe.
Cluanie Inn - Strathcarron.
Dalwhinnie - Fort William.