The calculated distance (air line) between Seriate and Cologno al Serio is approximately 8 miles respectively 12 kilometers.
By car or train, the actual journey to Cologno al Serio is certainly longer, as only the direct route (as the crow flies) between Seriate and Cologno al Serio has been calculated here.
Air line (approximately)
12 kilometers
7 nautical miles