The calculated distance (air line) between Khao Yoi and Nakhon Pathom is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Khao Yoi and Nakhon Pathom has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles