The calculated distance (air line) between Arida and Nishinomiya-hama is approximately 46 miles respectively 73 kilometers.
By car or train, the actual journey to Nishinomiya-hama is certainly longer, as only the direct route (as the crow flies) between Arida and Nishinomiya-hama has been calculated here.
Air line (approximately)
73 kilometers
40 nautical miles