The calculated distance (air line) between Wang Sai Phun and Phasi Charoen is approximately 185 miles respectively 298 kilometers.
By car or train, the actual journey to Phasi Charoen is certainly longer, as only the direct route (as the crow flies) between Wang Sai Phun and Phasi Charoen has been calculated here.
Air line (approximately)
298 kilometers
161 nautical miles