The calculated distance (air line) between Phanom Thuan and Khlong Luang is approximately 64 miles respectively 102 kilometers.
By car or train, the actual journey to Khlong Luang is certainly longer, as only the direct route (as the crow flies) between Phanom Thuan and Khlong Luang has been calculated here.
Air line (approximately)
102 kilometers
55 nautical miles