The calculated distance (air line) between Novi Travnik and Mrkonjić Grad is approximately 33 miles respectively 53 kilometers.
By car or train, the actual journey to Mrkonjić Grad is certainly longer, as only the direct route (as the crow flies) between Novi Travnik and Mrkonjić Grad has been calculated here.
Air line (approximately)
53 kilometers
29 nautical miles