The calculated distance (air line) between Santa Coloma de Gramenet and El Prat de Llobregat is approximately 10 miles respectively 17 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 Santa Coloma de Gramenet and El Prat de Llobregat has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles