The calculated distance (air line) between Chahār Burj and Eslam Qaleh is approximately 70 miles respectively 113 kilometers.
By car or train, the actual journey to Eslam Qaleh is certainly longer, as only the direct route (as the crow flies) between Chahār Burj and Eslam Qaleh has been calculated here.
Air line (approximately)
113 kilometers
61 nautical miles