There may be other recent threads on this that I have not found but all the threads I found were several years old , so here goes.
I understand that you can create routes and save them to a TomTom My Drive account that can then be downloaded wirelessly to the TTR device.
I can't find anything similar for Garmin despite Garmin having a similar Bluetooth app (Garmin Connect) and the developers on this site indicating they were working on a solution some time ago.
Am I missing something or does it still not exist??