The calculated distance (air line) between Kostanjevica na Krki and Slovenska Bistrica is approximately 38 miles respectively 62 kilometers.
By car or train, the actual journey to Slovenska Bistrica is certainly longer, as only the direct route (as the crow flies) between Kostanjevica na Krki and Slovenska Bistrica has been calculated here.
Air line (approximately)
62 kilometers
33 nautical miles