The calculated distance (air line) between Al Ḩayy and Darreh Shahr is approximately 103 miles respectively 165 kilometers.
By car or train, the actual journey to Darreh Shahr is certainly longer, as only the direct route (as the crow flies) between Al Ḩayy and Darreh Shahr has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles