The calculated distance (air line) between Bayjī and Sarpol-e Z̄ahāb is approximately 139 miles respectively 223 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 Bayjī and Sarpol-e Z̄ahāb has been calculated here.
Air line (approximately)
223 kilometers
120 nautical miles