How can I backup my files?

Problem: It's not really obvious to me where TrailRunner mini stores the main document containing routes. How can I backup these files?
Solution: TrailRunner mini stores files in the following locations:

The main container is here:

within that container, the following files are being stored:
Application Support/com.berbie.trailrunnermini/TrailNetworkStore.sqlite
Application Support/com.berbie.trailrunnermini/com.berbie.trailrunnermini.log

Hint: The __yourhome__/Library folder is invisible by default. But just hold down the option key while pulling down the Finder's "Go" menu to get there. Or you can make it permanently visible using the following terminal command:
chflags nohidden ~/Library/
or you can open it by typing the following into the Finder menu item Go > Go to Folder box:

How can I stwitch between kilometer and mile display?

Problem: How can I set TrailRunner mini to display kilometers instead of miles?
Solution: Your Mac has a central setting for your measurement units:

You Mac > System Preferences > Language and Text > Advanced > General > Units : Metric

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