Via the A5: Take the Freiburg Mitte exit. In Freiburg, first follow the signs for Donaueschingen, then turn right via Schauinsland towards Todtnau or via Oberried, then Notschrei, Muggenbrunn, then left towards Todtnauberg.
Via the A8 / A81: Take the Donaueschingen exit, from there follow the signs to Freiburg. Just before Titisee take Feldberg exit in a right-hand bend. Head over the Feldberg down to Todtnau and from there right towards Freiburg, Aftersteg and then right to Todtnauberg.
From Basel/Lörrach direction: Through Schopfheim, Zell, Schönau to Todtnau – from there turn left towards Freiburg, Aftersteg and then right to Todtnauberg.