Cyclists

@inge-bakermans
Indeed, Garmin uses the Here map.
You can create a route in the TomTom map without any problems, as long as you compare the route with the Here map via the "Toolkit" - Compare route with... This is because there are map differences between Here and TomTom
But as an XT user, I myself use the Here-Map with the "Michelin" map layer over it, as @Jack already indicates.

@inge-bakermans

Hello Inge, welcome to the forum. Maybe this wil help.
Click.

@paul-hulsegge

Hello Paul,

Use the Here-map instead of the OSM map (Green line is the Here-line)

@joe-bar

Hallo Joe, in onze eigen RouteXpert Bibliotheek.
Klik!