Sorry Meinrad, we don't have a way of merging a file of waypoints with an existing route. You would need add them to the route individually.
i was wondering if it is possible to add a file with waypoints (i guess it would come in a .kmz/.kml format) to an existing route?
What I want to achieve: i have a route which passes through several villages/towns. It would be very usefull to have them as waypoints on my garmin device. I found a list of towns for the country, but i am not sure if i can add this/combine with am existing route.
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