You can download an entire state or country map offline.
You will be able to download as many regions as you would like depending on the free space available.
Here are the steps to download an offline map section:
Go to "Settings" on the home screen.
Scroll down to select "Offline Map sections".
Continents will be shown.
You can click on the arrow to expand and see Countries and States.
Scroll till you get to the required region.
Tap on "Download".
This region will be downloaded and saved offline.
1. Once an offline map section is downloaded, Navigation Data and TBT for any routes which fall under that will be available on your device. You do not have to offline any route data additionally.
2. The hierarchy of the regions is: Continents > Countries > States. The smaller countries will be available as a single Region. Bigger countries such as the US, France etc. could be more than 9GB(total space on the Karoo). In such cases, they will be broken down by states into separate regions.