The calculated distance (air line) between Kaset Sombun and Khon Kaen is approximately 59 miles respectively 96 kilometers.
By car or train, the actual journey to Khon Kaen is certainly longer, as only the direct route (as the crow flies) between Kaset Sombun and Khon Kaen has been calculated here.
Air line (approximately)
96 kilometers
52 nautical miles