The calculated distance (air line) between Pak Kret and Phra Pradaeng is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Phra Pradaeng is certainly longer, as only the direct route (as the crow flies) between Pak Kret and Phra Pradaeng has been calculated here.
Air line (approximately)
29 kilometers
15 nautical miles