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