The calculated distance (air line) between Chigasaki and Nishi-Tokyo-shi is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Nishi-Tokyo-shi is certainly longer, as only the direct route (as the crow flies) between Chigasaki and Nishi-Tokyo-shi has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles