Drive on the motorway A7 and leave on the exit no. 137 "Oy-Mittelberg".
Drive on motorway A96 until "Buchlohe", change to B12 in the direction of "Kempten". In "Kempten" change to motorway A7 in the direction of "Füssen" until exit "Oy-Mittelberg".
Coming from Innsbruck on motorways A12 / B189 change in the direction of "Reutte/Fernpass", on motorway B179 until you reach the motorway A7 in Germany. Stay on A7 until exit "Oy-Mittelberg".
Coming from Zurich on motorway A1 along Winterthur und St. Gallen until you reach Bregenz. In Bregenz change to motorway A96 along motorway B12 via Isny until B12 leads to A980. Change to motorway A7 until you reach the exit "Oy-Mittelberg".