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