The calculated distance (air line) between Āzādshahr and Sarpol-e Z̄ahāb is approximately 156 miles respectively 250 kilometers.
By car or train, the actual journey to Sarpol-e Z̄ahāb is certainly longer, as only the direct route (as the crow flies) between Āzādshahr and Sarpol-e Z̄ahāb has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles