Route: Radel-Rund Böblingen Sindelfingen (Germany)

Radel-Rund is a cycling path around Böblingen and Sindelfingen. It leads through forests and fields on gravel or tarmac. Most of the time it's marked very well. 

More information: https://www.outdooractive.com/de/route/radtour/stuttgart-und-umgebung/radelrund/18516499/