The calculated distance (air line) between Imtarfa and Birżebbuġa is approximately 9 miles respectively 14 kilometers.
By car or train, the actual journey to Birżebbuġa is certainly longer, as only the direct route (as the crow flies) between Imtarfa and Birżebbuġa has been calculated here.
Air line (approximately)
14 kilometers
7 nautical miles