The calculated distance (air line) between Mīrābād and Lashkar Gāh is approximately 170 miles respectively 274 kilometers.
By car or train, the actual journey to Lashkar Gāh is certainly longer, as only the direct route (as the crow flies) between Mīrābād and Lashkar Gāh has been calculated here.
Air line (approximately)
274 kilometers
148 nautical miles