The calculated distance (air line) between Kotor Varoš and Bosanska Krupa is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Bosanska Krupa is certainly longer, as only the direct route (as the crow flies) between Kotor Varoš and Bosanska Krupa has been calculated here.
Air line (approximately)
101 kilometers
54 nautical miles