Sounds a good idea, How about you do every corner of the uk. Starting from somewhere like Dover in Kent, go along the sea front all the way to lands end and cornwall, then go up through wales, to liverpool then north to scotland, dunfries area on towards inverness or somewhere like that, coming back down going through york and onto birmingham, then going through norwich and suffolk finishing in london, something like that, just a suggestion.
cheers
ally