The calculated distance (air line) between Vnukovo and Leninskiye Gory is approximately 12 miles respectively 20 kilometers.
By car or train, the actual journey to Leninskiye Gory is certainly longer, as only the direct route (as the crow flies) between Vnukovo and Leninskiye Gory has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles