The calculated distance (air line) between Gostovići and Mrkonjić Grad is approximately 54 miles respectively 86 kilometers.
By car or train, the actual journey to Mrkonjić Grad is certainly longer, as only the direct route (as the crow flies) between Gostovići and Mrkonjić Grad has been calculated here.
Air line (approximately)
86 kilometers
47 nautical miles