The calculated distance (air line) between Qala i Naw and Fayrōz Kōh is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Fayrōz Kōh is certainly longer, as only the direct route (as the crow flies) between Qala i Naw and Fayrōz Kōh has been calculated here.
Air line (approximately)
201 kilometers
108 nautical miles