The calculated distance (air line) between Sumiswald and Zürich (Kreis 9) is approximately 42 miles respectively 68 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 Sumiswald and Zürich (Kreis 9) has been calculated here.
Air line (approximately)
68 kilometers
37 nautical miles