The calculated distance (air line) between Phayakkhaphum Phisai and Udon Thani is approximately 134 miles respectively 216 kilometers.
By car or train, the actual journey to Udon Thani is certainly longer, as only the direct route (as the crow flies) between Phayakkhaphum Phisai and Udon Thani has been calculated here.
Air line (approximately)
216 kilometers
116 nautical miles