Question about Forerunner 645 Music - 106604

It is possible to upload ready-made running routes to the Forerunner 645M via Garmin Connect, or to create routes yourself on the map and then transfer them to the watch. These are displayed on the watch as simple routes on a white background. This means that no map details (such as roads, level crossings, etc.) are visible.
Conversely, e.g. hikes (with GPS switched on) can be shown on a satellite

or road map at home via Garmin Connect.