The calculated distance (air line) between Kaštel Lukšić and Slavonski Brod is approximately 138 miles respectively 221 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 Lukšić and Slavonski Brod has been calculated here.
Air line (approximately)
221 kilometers
119 nautical miles