The calculated distance (air line) between Au and Zürich (Kreis 7) is approximately 49 miles respectively 80 kilometers.
By car or train, the actual journey to Zürich (Kreis 7) is certainly longer, as only the direct route (as the crow flies) between Au and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles