The calculated distance (air line) between Romorantin-Lanthenay and Paris 16 Passy is approximately 106 miles respectively 171 kilometers.
By car or train, the actual journey to Paris 16 Passy is certainly longer, as only the direct route (as the crow flies) between Romorantin-Lanthenay and Paris 16 Passy has been calculated here.
Air line (approximately)
171 kilometers
92 nautical miles