The calculated distance (air line) between Phak Hai and Mueang Nonthaburi is approximately 42 miles respectively 68 kilometers.
By car or train, the actual journey to Mueang Nonthaburi is certainly longer, as only the direct route (as the crow flies) between Phak Hai and Mueang Nonthaburi has been calculated here.
Air line (approximately)
68 kilometers
37 nautical miles