As far as I can work it out, this is the route for NCN2 from Cremyll Ferry in Plymouth to Ivybridge. I haven’t updates the Openstreetmap yet, as I’m not 100% certain on a few aspects. And this is where you come in: please will you look the route over and point out any inaccuracies that you may see?
There are MANY improvements that can be made to the route, and there are other alternative, signed sections in Plymouth that I did not include.