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