The calculated distance (air line) between Subotica and Smederevska Palanka is approximately 135 miles respectively 218 kilometers.
By car or train, the actual journey to Smederevska Palanka is certainly longer, as only the direct route (as the crow flies) between Subotica and Smederevska Palanka has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles