The calculated distance (air line) between Horta-Guinardó and El Prat de Llobregat is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to El Prat de Llobregat is certainly longer, as only the direct route (as the crow flies) between Horta-Guinardó and El Prat de Llobregat has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles