There is a road, no simple highway
Between the dawn and the dark of night
If you shoud go, no one may follow
That path is for your steps alone."
Other than jpeg pictures all the maps are in Google Earth format (kml, or kmz). The color code is:
Yellow = paved road
Brown = confirmed big bike road.
Blue = looks like it might be a big bike road but unconfirmed,.
When you download a map set it will be in a zip file and all the contained files will be for google earth.