I don’t know much about the route options…. but I felt the route was brilliantly conceived…. I don’t know what % of the trip was done on ‘busy’ roads….but if felt like a very small %. The way you manage to circumnavigate Manchester without us realising it was phenomenal. Equally the route through the Cairngorns was challenging but we wouldn’t have changed it. Other highlights were the early days with the ferry crossings and the lovely climb up the upper Lune valley.