The calculated distance (air line) between Bang Mun Nak and Khlong Luang is approximately 137 miles respectively 220 kilometers.
By car or train, the actual journey to Khlong Luang is certainly longer, as only the direct route (as the crow flies) between Bang Mun Nak and Khlong Luang has been calculated here.
Air line (approximately)
220 kilometers
119 nautical miles