The calculated distance (air line) between Kelīshād va Sūdarjān and Rehnān is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to Rehnān is certainly longer, as only the direct route (as the crow flies) between Kelīshād va Sūdarjān and Rehnān has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles