How to transfer kmz to garmin?

It is not so direct, but it is possible. Your Garmin does not read KMZ files. A KMZ is like a zip file, you know? Inside there is a KML file. This is the important part.

First, you must change the file name. From my-file.kmz to my-file.zip. Then you can open it like a normal zip file on your computer. Inside, you will see a file, maybe named doc.kml. Take this file out.

Now you have a KML file. Your Garmin still does not like this file. You must change it to a GPX file.

The easy way is to use an online converter. I use a website called GPS Visualizer. It is free. You upload your KML file. You choose the output as GPX. Then you download the new GPX file. Very simple.

Another way is with Garmin BaseCamp software. It is also free. You can import your KML file into BaseCamp. Then you can send it direct to your device. BaseCamp makes it a GPX for you.

When you have the GPX file, connect your Garmin to the computer with a USB cable. It is like a USB key. Find the folder named Garmin, and inside, a folder named GPX. You just copy your new file into this GPX folder.

Disconnect your Garmin, and when you turn it on, the track or points should be there. I hope this helps you.