The calculated distance (air line) between Phanom Thuan and Bueng Kum is approximately 69 miles respectively 112 kilometers.
By car or train, the actual journey to Bueng Kum is certainly longer, as only the direct route (as the crow flies) between Phanom Thuan and Bueng Kum has been calculated here.
Air line (approximately)
112 kilometers
60 nautical miles