Here you can download maps *.mp routing for GPSMapEdit.
MP (PFM) is text based format to store vector maps OpenStreetMap.

Polish format — OpenStreetMap Wiki

Polish MP (cGPSMapper) (bluemarblegeo.com)

 

What is Polish Format, User Manual

Routing in the KML format of major

highways has been prepared for Japan:

 

Japan routes_by_highways