The calculated distance (air line) between Khodzha-Maston and Dushanbe is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Dushanbe is certainly longer, as only the direct route (as the crow flies) between Khodzha-Maston and Dushanbe has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles