The calculated distance (air line) between Mehtar Lām and Bāmyān is approximately 136 miles respectively 218 kilometers.
By car or train, the actual journey to Bāmyān is certainly longer, as only the direct route (as the crow flies) between Mehtar Lām and Bāmyān has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles