The calculated distance (air line) between Bāmyān and Fayrōz Kōh is approximately 148 miles respectively 238 kilometers.
By car or train, the actual journey to Fayrōz Kōh is certainly longer, as only the direct route (as the crow flies) between Bāmyān and Fayrōz Kōh has been calculated here.
Air line (approximately)
238 kilometers
128 nautical miles