The calculated distance (air line) between Shirahamachō-usazakiminami and Aioi is approximately 14 miles respectively 23 kilometers.
By car or train, the actual journey to Aioi is certainly longer, as only the direct route (as the crow flies) between Shirahamachō-usazakiminami and Aioi has been calculated here.
Air line (approximately)
23 kilometers
12 nautical miles