it's fine, so long as you're expecting it. quite a lot of the NCN is on decent roads - can't you guess it from google maps? as a very rough rule of thumb, anything not on the main road is likely to be a little off-road, maybe a farm track kind of surface. the one that dumped me on a sandy beach was a bit unusual. routes that go near touristic spots often turn into traffic-free tracks too - but as with the beach these are relatively short sections. I think I ended up carrying the bike on the sand, but appreciate this may not be ideal when wearing road shoes. actually if I think about it, all the most unhelpful surfaces I've come across have been by the seaside. if you're inland, should be ok.
it's fine, so long as you're expecting it. quite a lot of the NCN is on decent roads - can't you guess it from google maps? as a very rough rule of thumb, anything not on the main road is likely to be a little off-road, maybe a farm track kind of surface. the one that dumped me on a sandy beach was a bit unusual. routes that go near touristic spots often turn into traffic-free tracks too - but as with the beach these are relatively short sections. I think I ended up carrying the bike on the sand, but appreciate this may not be ideal when wearing road shoes. actually if I think about it, all the most unhelpful surfaces I've come across have been by the seaside. if you're inland, should be ok.