The calculated distance (air line) between Esplugues de Llobregat and Gavà is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Gavà is certainly longer, as only the direct route (as the crow flies) between Esplugues de Llobregat and Gavà has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles