The calculated distance (air line) between Sonta and Sremska Mitrovica is approximately 49 miles respectively 80 kilometers.
By car or train, the actual journey to Sremska Mitrovica is certainly longer, as only the direct route (as the crow flies) between Sonta and Sremska Mitrovica has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles