The calculated distance (air line) between Sumiswald and Zürich (Kreis 12) is approximately 47 miles respectively 75 kilometers.
By car or train, the actual journey to Zürich (Kreis 12) is certainly longer, as only the direct route (as the crow flies) between Sumiswald and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
75 kilometers
41 nautical miles