The calculated distance (air line) between Kūhdasht and Sarpol-e Z̄ahāb is approximately 119 miles respectively 191 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 Kūhdasht and Sarpol-e Z̄ahāb has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles