Originally Posted by
njkayaker
I don't know what maps you have installed on your device. The route planners usually use Google maps but often allow the OpenStreet maps (OSM) to be used.
Routing works best if you use the same maps for planning that are on the device.
I have a prehistoric device that doesn't have maps. It is an Edge 305, from the Stone Age of 2007.
Originally Posted by
njkayaker
Given where you live, it's possible that the "openfietsmap" (bicycle) version of the Openstreet maps might work better for you. (The bicycle versions of the OSM maps don't work very well in the US.)
An easy-to-use source for OSM maps (including "openfietsmap" versions).
Free worldwide Garmin maps from OpenStreetMap
Keep in mind that the maps produced by this site all have the same *.img file name. To change the name, you need to extract from the zip file to your hard disk (not to the Garmin directly) and rename the file there.
Detailed instructions:
How to download free maps to your Garmin Edge 705/800/810 | DC Rainmaker
Be careful not to overwrite any maps that already exist on your microSD card!
Thanks. I might buy a new device in the next year or so, in that case this is very useful info.