Maps to GPX

[Chris KC]

Try this, Chris:  https://www.gpsvisualizer.com/draw/?api=g

Thanks Ruairidh - but I'm afraid it has the same issue as "maps to gpx".

Specifically: "Due to dramatic reductions in Google's quotas, you can no longer convert Google directions URLs unless you supply your own API key.  See http://www.gpsvisualizer.com/misc/google_api_keys.html for more information".

It would appear Google have pulled the plug on apps which translate their route directions into 3rd party content (such as .gpx converters which enable upload to a device).

Theoretically you can apply for an API key, but step 1 is you have to hand Google your credit card. 
I guess these tools will rapidly fall into disuse (at least, as far as this functionality is concerned).