The calculated distance (air line) between Chon Daen and Khlong Luang is approximately 148 miles respectively 237 kilometers.
By car or train, the actual journey to Khlong Luang is certainly longer, as only the direct route (as the crow flies) between Chon Daen and Khlong Luang has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles