The calculated distance (air line) between Santa Coloma de Cervelló and Sant Martí is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to Sant Martí is certainly longer, as only the direct route (as the crow flies) between Santa Coloma de Cervelló and Sant Martí has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles