The calculated distance (air line) between Küttigen and Zürich (Kreis 9) is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Zürich (Kreis 9) is certainly longer, as only the direct route (as the crow flies) between Küttigen and Zürich (Kreis 9) has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles