The calculated distance (air line) between Donji Vakuf and Bosanska Krupa is approximately 80 miles respectively 129 kilometers.
By car or train, the actual journey to Bosanska Krupa is certainly longer, as only the direct route (as the crow flies) between Donji Vakuf and Bosanska Krupa has been calculated here.
Air line (approximately)
129 kilometers
69 nautical miles