We would like to drive from Munich to Schonach
We do not want to drive on any super highways or autobahn type roads
Can we do this drive on country roads ?
How long would it take
Thanx

www.viamichelin.com will give you the answer, minus the stops for gas and food and potential traffic tie-ups.

There are a bajillion different routes you could take. The highway ones you don't want would take about 4 hours and a random route along secondary roads between 5:30 and 6:00 hours.

klick here,

garanty without interstates and highways ;-)

https://maps.google.de/maps?saddr=m%...,20,21&t=m&z=9

If you're taking back roads, I suggest on familiarizing yourself beforehand of traffic laws and signage. You're more likely to run into a traffic camera on a secondary road than the autobahn, so make sure you know the speed limits for different areas as they are not always posted.

Is the reason for the back roads scenic interest or concern of driving on the high way? If the latter then I would point out that it really is not as bad as some people think. If you drive high-ways at home, you will be fine driving at 100 km/h. And there is sometimes more idiots on secondary roads ...

If you take the autobahn, be prepared for delays. It seems any time I need to go somewhere, there is construction or a wreck that causes delays.

Sunday I was driving home from the airport and I was in stop and go traffic for about 10km and the reason for that was an overturned SUV in the opposite direction of travel that people were rubber necking at. That wreck caused traffic on that side to be stopped for at least 6km. It was recent too as emergency vehicles were not there yet.

accidents, rush hour, construction, vacation traffic or any combination of these happen. Still, it usually is the quickest way to get from a to b. We frequently decide to take the scenic routes and enjoy it, but it is very very rarely quicker (always exceptions to the rule). But if you are comfortable driving 100 km/h to 120 km/h you will be fine. If not then it is going to be annoying on the back roads as well as the speed limit in many places is 100 km/h and locals kind of do expect you to drive roughly that.
As Munich to Schonach is quite a drive I would decide how much time I want to spend, then decide if I wanted to do the whole thing on country roads or if I wanted to cover parts of it on the Autobahn. Really it is not as bad as many people seem to think
How long it would take depends a bit on the season and the day of the week. The route that was suggested above is 6 hours. You could take A96 to Memmingen, to do a parts on the Autobahn and then take country roads from there. Depending on how much time you want to take, you could also detour along some of the Bavarian lakes or for example Lake Constance (Bodensee). If you do it will be more than 6 hours for sure, because eg along the Bodensee you will go through many cities with traffic lights, local traffic and a speed limit of 50 km/h which is enforced by quite a number of speed traps.