The calculated distance (air line) between Muhmand Dara and Bāmyān is approximately 178 miles respectively 286 kilometers.
By car or train, the actual journey to Bāmyān is certainly longer, as only the direct route (as the crow flies) between Muhmand Dara and Bāmyān has been calculated here.
Air line (approximately)
286 kilometers
154 nautical miles