The calculated distance (air line) between Château-Renault and Nogent-le-Rotrou is approximately 51 miles respectively 81 kilometers.
By car or train, the actual journey to Nogent-le-Rotrou is certainly longer, as only the direct route (as the crow flies) between Château-Renault and Nogent-le-Rotrou has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles