The calculated distance (air line) between Phasi Charoen and Kanchanaburi is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Kanchanaburi is certainly longer, as only the direct route (as the crow flies) between Phasi Charoen and Kanchanaburi has been calculated here.
Air line (approximately)
101 kilometers
55 nautical miles