General Wade's military Road for me, plus that bloomin' great big hill!! Jeez, that was fun with a fully freighted bike.. 💪Yes I rode the Caledonian canal too in 2019 when I did NCN 78 from Campbeltown to Inverness and spent a few days in Fort William to do the train journey and Potter around. I split the canal ride in two, spending a night at a hostel in Fort Augustus as I had planned two really leisurely days stopping everywhere to watch boats pass through the lock gates and as it turned out I never saw a single boat that was actually moving! The only boats I saw on the canal were all moored.