I already wanted to to this for a while – now I’ve finally done it and used the free monday for the way from friends in Munich back to Augsburg by bicycle.
About 66 km with an average speed of around 18.5 km/h. Including breaks in between it took about 4 hours. I must admit – I don’t want to drive this route again very soon, since between Egenhofen and Friedberg the topology is quite hilly.
You can see the route on my GPX-Viewer.