The calculated distance (air line) between Buochs and Zürich (Kreis 3) is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Zürich (Kreis 3) is certainly longer, as only the direct route (as the crow flies) between Buochs and Zürich (Kreis 3) has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles