The calculated distance (air line) between Chum Phae and Udon Thani is approximately 75 miles respectively 121 kilometers.
By car or train, the actual journey to Udon Thani is certainly longer, as only the direct route (as the crow flies) between Chum Phae and Udon Thani has been calculated here.
Air line (approximately)
121 kilometers
65 nautical miles