Thanks very much for the suggestions. For sure I will be doing the research on them and chances are excellent that some of them will be visited as they lie more or less along the present notional path. The idea of riding at 14,000' appeals, just to say I have done it! I have eleven weeks off work and although I am tempted to ask for more, it could be prejudicial to my continued gainful employment!
Yes, I am aware that Sturgis is on and have timed our arrival in SD for 13 August on the premise that things will be a bit quieter. Am I mistaken? I am also aware that there are some Harley Davidson rides around August/September time and ditto evasive action has been planned!
Best wishes for your own plans! Hope you have a fantastic experience and a safe ride.