The calculated distance (air line) between Prakhon Chai and Chon Buri is approximately 167 miles respectively 269 kilometers.
By car or train, the actual journey to Chon Buri is certainly longer, as only the direct route (as the crow flies) between Prakhon Chai and Chon Buri has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles