From Spandau to Sacrow one can get by very good bike roads with beautiful landscape, especially along the west cost of Havel river. The rout is nearly 40 km and suites for one day trip with kids (4 years old on the Trail gator connection visible on the picture below).
In August we experience the beauties of Bavaria on the one of the best German bike tours: The Five Rivers bike tour. Tour is rather flat and well prepared with most of the kilometers outside of the car traffic. There is always water near by to refresh when it is becaming too hot form cycling or from the Sun. The countryside is picturesque. Often on the way there are white rocks, castles, midle age towns, forests making it full of attractions. Our kids enjoyed most Archaeology Park in Altmühltal were the Celtics buildings are reconstructed and stay directly next to the path in more stations.
There are many campings places and other accommodation on the way. You can download the official map on the Geo-Data Five Rivers bike tour
