The calculated distance (air line) between Khon Kaen and Phayakkhaphum Phisai is approximately 69 miles respectively 110 kilometers.
By car or train, the actual journey to Phayakkhaphum Phisai is certainly longer, as only the direct route (as the crow flies) between Khon Kaen and Phayakkhaphum Phisai has been calculated here.
Air line (approximately)
110 kilometers
60 nautical miles