The calculated distance (air line) between Nā’īn and Khomeynī Shahr is approximately 91 miles respectively 146 kilometers.
By car or train, the actual journey to Khomeynī Shahr is certainly longer, as only the direct route (as the crow flies) between Nā’īn and Khomeynī Shahr has been calculated here.
Air line (approximately)
146 kilometers
79 nautical miles