The calculated distance (air line) between Fereydūnshahr and Borūjerd is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Borūjerd is certainly longer, as only the direct route (as the crow flies) between Fereydūnshahr and Borūjerd has been calculated here.
Air line (approximately)
166 kilometers
89 nautical miles