The calculated distance (air line) between Sang-e Chārak and Nahrīn is approximately 152 miles respectively 244 kilometers.
By car or train, the actual journey to Nahrīn is certainly longer, as only the direct route (as the crow flies) between Sang-e Chārak and Nahrīn has been calculated here.
Air line (approximately)
244 kilometers
132 nautical miles