Using KML file to be Navigation App's destination.
Google myMap is a very convenience software to create your own place, however it is not easy to find your POI in Google Navigation APP.
Now, we have KML Navigation Aide to help you (KML Reader).
This APP can open the KML file and list up all your points that sort by distance, thus help you to read and find targeted points much easier.
You can also find your targeted point by keyword searching, on the result page your one click on the targeted point will get directions and navigate to any saved place on your map.
Before you use the APP, you must create your own Google My Map first.
Then export it to a KML file and email yourself or transfer it to your phone.
Next step, just open the APP and load the KML file (You can open it from email directly also).
You will see your Place Marker show in the list, then click the place. It will open Navigation APP.
That's all, hopefully you would like it.