I question some of the "advice" that Google Maps is giving us, here in Sudbury.
The first part (right end) of the solid green line from KR Thompson to the "ss" in bypass is so very rough, up and down outcrops of rock that even a mountain bike would have to be lifted. The green dotted line of Gibson Road is a rough, dirt road, full of potholes and, because it is spring, very muddy and not a suitable road at all.