The calculated distance (air line) between Romorantin-Lanthenay and Chécy is approximately 39 miles respectively 62 kilometers.
By car or train, the actual journey to Chécy is certainly longer, as only the direct route (as the crow flies) between Romorantin-Lanthenay and Chécy has been calculated here.
Air line (approximately)
62 kilometers
34 nautical miles