The calculated distance (air line) between Unterseen and Zürich (Kreis 10) is approximately 59 miles respectively 94 kilometers.
By car or train, the actual journey to Zürich (Kreis 10) is certainly longer, as only the direct route (as the crow flies) between Unterseen and Zürich (Kreis 10) has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles