Is there a way to add custom roads (e.g. off-road routes) to google maps and then get directions to use them?

Question

I want to add some custom roads using google maps api (i.e. off-road routes, gravel roads that aren't marked as roads in the map, etc) and then use those roads in conjunction with existing roads to get directions. I know this isn't possible out of the box, but I wonder if there are any tools, custom implementations or 3rd party libraries to do that.

Answer 1

No, there isn't a way to do this at this time. You would have to essentially create your own routing application.