The calculated distance (air line) between Siebnen and Zürich (Kreis 11) is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to Zürich (Kreis 11) is certainly longer, as only the direct route (as the crow flies) between Siebnen and Zürich (Kreis 11) has been calculated here.
Air line (approximately)
40 kilometers
21 nautical miles