The calculated distance (air line) between Zaječar and Smederevska Palanka is approximately 72 miles respectively 116 kilometers.
By car or train, the actual journey to Smederevska Palanka is certainly longer, as only the direct route (as the crow flies) between Zaječar and Smederevska Palanka has been calculated here.
Air line (approximately)
116 kilometers
63 nautical miles