The calculated distance (air line) between Šibenik and Kaštel Lukšić is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Kaštel Lukšić is certainly longer, as only the direct route (as the crow flies) between Šibenik and Kaštel Lukšić has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles