Hadrian's Wall

[carlislemike]

Just looked at the NCN route for Hadrian's Cycleway. It doesn't actually follow the Roman Wall that much. The B6318 comes closest by far and has both Housteads and several good local pubs alongside if my memory serves me well, Is it about accommodation or what as contour wise, it seem reasonably similar to the NCN route and the road was never a traffic nightmare except on late Friday nights. Any suggestions as my history buff brother in law wants to cycle the Wall not the route NCN suggest?