Originally Posted by
prj71
A setting in the device that tells it to avoid gravel roads and drive on paved roads is why.
The only setting on this device is do I want the shortest distance or the fastest time, road surface is not a selection. The Nuvi is designed for automotive travel, thus the only routing is for automobiles. I do not recall, there might be a pedestrian mode too, but if there is, I doubt that is why it told me to drive a few extra hundred miles.