The calculated distance (air line) between Khon Kaen and Kaset Wisai is approximately 74 miles respectively 119 kilometers.
By car or train, the actual journey to Kaset Wisai is certainly longer, as only the direct route (as the crow flies) between Khon Kaen and Kaset Wisai has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles