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