Anyone know of any good gyms in these two locations?
I know a great gym right by Oberammergau- the Alps!
PS: And realize that the German word "Gymnasium" refers to an upper tier secondary school, in case you find yourself searching a German phone book.
If you google "Munich gyms" you'll find several websites for "fitness centers" in the area. That's what they're often called in Germany. You could try the same thing for Oberammergau.
Gymnasium in German is actually the name for one type of public school. I would suggest searching for "fitness facilities" rather than gyms. The miles of additional walking I do each day is my fitness routine on the road.
Oberammergau is in the Alps, climb and Alp and save yourself some money. Rollerskate around Munich.
I spent anywhere from 6-10 hours a day walking around every day of my trip, so I lost 5lbs over the couple of weeks I was there, in spite of all the food and beer. Don't waste your time going to the gym (and this is coming from a 6-days-a-week gym rat).