The calculated distance (air line) between Barmbek-Süd and Braunschweig is approximately 93 miles respectively 150 kilometers.
By car or train, the actual journey to Braunschweig is certainly longer, as only the direct route (as the crow flies) between Barmbek-Süd and Braunschweig has been calculated here.
Air line (approximately)
150 kilometers
81 nautical miles