The calculated distance (air line) between Kaštel Sućurac and Slavonski Brod is approximately 136 miles respectively 219 kilometers.
By car or train, the actual journey to Slavonski Brod is certainly longer, as only the direct route (as the crow flies) between Kaštel Sućurac and Slavonski Brod has been calculated here.
Air line (approximately)
219 kilometers
118 nautical miles