The calculated distance (air line) between Sangkhla Buri and Lat Krabang is approximately 185 miles respectively 297 kilometers.
By car or train, the actual journey to Lat Krabang is certainly longer, as only the direct route (as the crow flies) between Sangkhla Buri and Lat Krabang has been calculated here.
Air line (approximately)
297 kilometers
160 nautical miles