The calculated distance (air line) between Šabac and Smederevska Palanka is approximately 68 miles respectively 109 kilometers.
By car or train, the actual journey to Smederevska Palanka is certainly longer, as only the direct route (as the crow flies) between Šabac and Smederevska Palanka has been calculated here.
Air line (approximately)
109 kilometers
59 nautical miles