The calculated distance (air line) between Sant Gervasi - Galvany and Badalona is approximately 7 miles respectively 10 kilometers.
By car or train, the actual journey to Badalona is certainly longer, as only the direct route (as the crow flies) between Sant Gervasi - Galvany and Badalona has been calculated here.
Air line (approximately)
10 kilometers
6 nautical miles