The calculated distance (air line) between Yanagawamachi-saiwaichō and Chiba is approximately 158 miles respectively 254 kilometers.
By car or train, the actual journey to Chiba is certainly longer, as only the direct route (as the crow flies) between Yanagawamachi-saiwaichō and Chiba has been calculated here.
Air line (approximately)
254 kilometers
137 nautical miles