The calculated distance (air line) between Čelinac and Mrkonjić Grad is approximately 24 miles respectively 39 kilometers.
By car or train, the actual journey to Mrkonjić Grad is certainly longer, as only the direct route (as the crow flies) between Čelinac and Mrkonjić Grad has been calculated here.
Air line (approximately)
39 kilometers
21 nautical miles