The calculated distance (air line) between Falkenhagener Feld and Friedenau is approximately 9 miles respectively 14 kilometers.
By car or train, the actual journey to Friedenau is certainly longer, as only the direct route (as the crow flies) between Falkenhagener Feld and Friedenau has been calculated here.
Air line (approximately)
14 kilometers
8 nautical miles