The calculated distance (air line) between Smederevska Palanka and Sremska Mitrovica is approximately 78 miles respectively 126 kilometers.
By car or train, the actual journey to Sremska Mitrovica is certainly longer, as only the direct route (as the crow flies) between Smederevska Palanka and Sremska Mitrovica has been calculated here.
Air line (approximately)
126 kilometers
68 nautical miles