The calculated distance (air line) between Kūhdasht and Fereydūnshahr is approximately 151 miles respectively 243 kilometers.
By car or train, the actual journey to Fereydūnshahr is certainly longer, as only the direct route (as the crow flies) between Kūhdasht and Fereydūnshahr has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles