The calculated distance (air line) between Chêne-Bougeries and Rapperswil is approximately 144 miles respectively 231 kilometers.
By car or train, the actual journey to Rapperswil is certainly longer, as only the direct route (as the crow flies) between Chêne-Bougeries and Rapperswil has been calculated here.
Air line (approximately)
231 kilometers
125 nautical miles