Free Maps For Garmin Etrex 20 X. These OpenStreetMap based maps are free and available even for countries not covered by Garmin or other map providers. The project was started because most maps you think of as free actually have severe legal or technical restrictions on their.
I'm a big fan of Garmin GPS devices, but I always found it disappointing that they charged extra for maps. Here I'm browsing detail around Icehouse Saddle in California. Many Garmin GPS devices can show maps on their display.
It runs off of AA batteries so you never have to worry about charging the device or not being able to keep it powered on multi-day tours.
OpenStreetMap creates and provides free geographic data such as street maps to anyone who wants them.
And in most cases, the free maps are much better than the expensive Garmin maps. Some people have done the work of creating Garmin maps for parts of the globe. I downloaded the free ones off certain websites but after reading another posting on this subject am unsure if these are any good.