How do you download OSM maps to Garmin Edge? How do you download free Open Street Maps (OSM) data on to an SD card for garmin edge 800 / 810 for use in navigation and turn by turn directions?
You can get map files that work on Garmin devices (I haven't tried with Edge) from this site. You can select predefined areas (countries, provinces) of the world you want, or create custom selections of just your area. They generate a map of your desired area and send you an email when its ready so you can download it.