The calculated distance (air line) between Krasnoyarsk and Sosnovoborsk is approximately 20 miles respectively 31 kilometers.
By car or train, the actual journey to Sosnovoborsk is certainly longer, as only the direct route (as the crow flies) between Krasnoyarsk and Sosnovoborsk has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles