By car:

Highway A5 Karlsruhe-Basel by the exit Appenweier/Straßburg continue on the B28 in direction Oberkirch-Freudenstadt

Highway A81, Stuttgart-Singen by the exit Horb, direction Freudenstadt/Straßburg

By train:

Route Karlsruhe-Basel as far as Offenburg (IC an ICE connexion) or station Appenweier (change to train or bus to Oppenau)

Timetable from the train