The calculated distance (air line) between La Roca del Vallès and Santa Coloma de Gramenet is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Santa Coloma de Gramenet is certainly longer, as only the direct route (as the crow flies) between La Roca del Vallès and Santa Coloma de Gramenet has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles