The calculated distance (air line) between Khlong Luang and Kanchanaburi is approximately 74 miles respectively 119 kilometers.
By car or train, the actual journey to Kanchanaburi is certainly longer, as only the direct route (as the crow flies) between Khlong Luang and Kanchanaburi has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles