The calculated distance (air line) between Mueang Nonthaburi and Ratchaburi is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to Ratchaburi is certainly longer, as only the direct route (as the crow flies) between Mueang Nonthaburi and Ratchaburi has been calculated here.
Air line (approximately)
84 kilometers
45 nautical miles