The calculated distance (air line) between Bamnet Narong and Krathum Baen is approximately 160 miles respectively 257 kilometers.
By car or train, the actual journey to Krathum Baen is certainly longer, as only the direct route (as the crow flies) between Bamnet Narong and Krathum Baen has been calculated here.
Air line (approximately)
257 kilometers
139 nautical miles