About 41.8 miles.
In terms of one-way distances, that would have to be to Berlin, a total of 500 miles.
By train and by foot. The public transportation system is really affordable, and the app for the Deutsche Bahn (or German railway service) is really easy to use.
Bregenz, Austria. In fact, Jenny and I liked it so much that we're planning a second visit on Monday!
In December, Jenny and I traveled extensively to Berlin, Vienna, Salzburg, Lucerne and more. I will try to find ways to tell you about these experiences and share some advice on these locations if I can at a later date.