The calculated distance (air line) between Basse-Nendaz and Rapperswil is approximately 101 miles respectively 163 kilometers.
By car or train, the actual journey to Rapperswil is certainly longer, as only the direct route (as the crow flies) between Basse-Nendaz and Rapperswil has been calculated here.
Air line (approximately)
163 kilometers
88 nautical miles