The calculated distance (air line) between Balashikha and Staraya Kupavna is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Staraya Kupavna is certainly longer, as only the direct route (as the crow flies) between Balashikha and Staraya Kupavna has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles