Just tried the southbound section (train home) to see if I'm up for the whole enchilada next week. Couple of observations -I can vouch for the fact it is hilly - fairly relentlessly so, and some of the road surface (especially the lanes) is pretty bad, so wide tyres and lower pressures may be a good idea. A few ride-ending potholes so beware.
Otherwise, very scenic and took me to parts I haven't ridden before. Am seriously thinking of entering, weather co-operating!