The calculated distance (air line) between Markaz-e Woluswalī-ye Āchīn and Khōst is approximately 71 miles respectively 114 kilometers.
By car or train, the actual journey to Khōst is certainly longer, as only the direct route (as the crow flies) between Markaz-e Woluswalī-ye Āchīn and Khōst has been calculated here.
Air line (approximately)
114 kilometers
61 nautical miles