The calculated distance (air line) between Ečka and Smederevska Palanka is approximately 71 miles respectively 114 kilometers.
By car or train, the actual journey to Smederevska Palanka is certainly longer, as only the direct route (as the crow flies) between Ečka and Smederevska Palanka has been calculated here.
Air line (approximately)
114 kilometers
62 nautical miles