The calculated distance (air line) between Wiset Chaichan and Nong Khaem is approximately 61 miles respectively 99 kilometers.
By car or train, the actual journey to Nong Khaem is certainly longer, as only the direct route (as the crow flies) between Wiset Chaichan and Nong Khaem has been calculated here.
Air line (approximately)
99 kilometers
53 nautical miles