The calculated distance (air line) between Yanagawamachi-saiwaichō and Niigata is approximately 87 miles respectively 140 kilometers.
By car or train, the actual journey to Niigata is certainly longer, as only the direct route (as the crow flies) between Yanagawamachi-saiwaichō and Niigata has been calculated here.
Air line (approximately)
140 kilometers
76 nautical miles