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