The calculated distance (air line) between Buochs and Zürich (Kreis 4) / Aussersihl is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Zürich (Kreis 4) / Aussersihl is certainly longer, as only the direct route (as the crow flies) between Buochs and Zürich (Kreis 4) / Aussersihl has been calculated here.
Air line (approximately)
45 kilometers
25 nautical miles