The calculated distance (air line) between Zrenjanin and Bačka Palanka is approximately 49 miles respectively 78 kilometers.
By car or train, the actual journey to Bačka Palanka is certainly longer, as only the direct route (as the crow flies) between Zrenjanin and Bačka Palanka has been calculated here.
Air line (approximately)
78 kilometers
42 nautical miles