The calculated distance (air line) between Yên Vinh and Phon Charoen is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Phon Charoen is certainly longer, as only the direct route (as the crow flies) between Yên Vinh and Phon Charoen has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles