The calculated distance (air line) between Banatski Karlovac and Smederevska Palanka is approximately 47 miles respectively 76 kilometers.
By car or train, the actual journey to Smederevska Palanka is certainly longer, as only the direct route (as the crow flies) between Banatski Karlovac and Smederevska Palanka has been calculated here.
Air line (approximately)
76 kilometers
41 nautical miles