The calculated distance (air line) between Hōjō and Nishinomiya-hama is approximately 154 miles respectively 248 kilometers.
By car or train, the actual journey to Nishinomiya-hama is certainly longer, as only the direct route (as the crow flies) between Hōjō and Nishinomiya-hama has been calculated here.
Air line (approximately)
248 kilometers
134 nautical miles