Here's how to get and install free Garmin GPS maps for hiking and the outdoors. Don't pay for the expensive Garmin. there’s a way to get free Garmin GPS maps. And in most cases, the free maps are much better than the expensive Garmin maps. Now you wait. It can take a while for the maps to load onto your device. Don’t do this if you Author: Cris Hazzard. We use open source maps downloaded to our Garmin GPS. A friend taught us how to download free maps to our GPS when we were in Mexico. We are forever indebted to him for showing us how to do this. It saved us lots of money since we didn’t have to purchase the maps from Garmin and the open source maps are updated more frequently. Mar 24, · Buying maps of Europe for my Garmin. Jump to bottom. Posted by Susan and Monte OR you can buy it on DVD and choose what you want to put onto your Garmin (via a micro SD card). (I guess because they don't know what they are doing I did the download) but I will buy the other if more than one person can use it does this make any.