The calculated distance (air line) between Chachoengsao and Chon Buri is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Chon Buri is certainly longer, as only the direct route (as the crow flies) between Chachoengsao and Chon Buri has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles