The calculated distance (air line) between Khorramshahr and Al Hārithah is approximately 27 miles respectively 44 kilometers.
By car or train, the actual journey to Al Hārithah is certainly longer, as only the direct route (as the crow flies) between Khorramshahr and Al Hārithah has been calculated here.
Air line (approximately)
44 kilometers
24 nautical miles