In reply to girlymonkey:
Just around Muenchen itself is dead flat, but as you come into the airport you can see the mountains by Oberammergau off to the south. I'm guessing a one-hour train ride or so would get you to 2700m-ish hills that are well worth walking in, and (this being Germany) well equipped with walking and cycling trails, too.
Boots? Myself, I never use boots. Not unless I have to (e.g. to put ice-climbing crampons on them). Approach shoes are so much more comfortable. And you can get a walking crampon on an approach shoe, with a bit of faith...