How far do folk reckon they’d get in the first day, realistically?
Well from 8am you’ve roughly 14hrs of usable light at that time of year – possibly more if it’s a fine day with no clouds. Let’s allow two hours for stops so that’s 12hrs. I can average 15kph over that sort of terrain including opening gates etc., so that’s roughly 180Km or just over 110 miles in old money.
Unless you are very fit and know how to look after yourself for long distances and times in the saddle then you are going to slow down significantly in the latter stages. Also you need to be able to keep your concentration going for that period of time, you’ll find yourself making mistakes on ground that normally you’d cruise over.