The calculated distance (air line) between Phra Pradaeng and Kanchanaburi is approximately 70 miles respectively 113 kilometers.
By car or train, the actual journey to Kanchanaburi is certainly longer, as only the direct route (as the crow flies) between Phra Pradaeng and Kanchanaburi has been calculated here.
Air line (approximately)
113 kilometers
61 nautical miles