The calculated distance (air line) between Rapperswil and Zürich (Kreis 11) is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Zürich (Kreis 11) is certainly longer, as only the direct route (as the crow flies) between Rapperswil and Zürich (Kreis 11) has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles