The calculated distance (air line) between Khlong Luang and Chachoengsao is approximately 39 miles respectively 62 kilometers.
By car or train, the actual journey to Chachoengsao is certainly longer, as only the direct route (as the crow flies) between Khlong Luang and Chachoengsao has been calculated here.
Air line (approximately)
62 kilometers
34 nautical miles