The calculated distance (air line) between Ban Sam Chuk and Krathum Baen is approximately 76 miles respectively 122 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 Sam Chuk and Krathum Baen has been calculated here.
Air line (approximately)
122 kilometers
66 nautical miles