The calculated distance (air line) between Kostrzyn nad Odrą and Szczecin is approximately 58 miles respectively 94 kilometers.
By car or train, the actual journey to Szczecin is certainly longer, as only the direct route (as the crow flies) between Kostrzyn nad Odrą and Szczecin has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles