The calculated distance (air line) between Kahrīz and Sarpol-e Z̄ahāb is approximately 68 miles respectively 110 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 Kahrīz and Sarpol-e Z̄ahāb has been calculated here.
Air line (approximately)
110 kilometers
59 nautical miles