The calculated distance (air line) between Doembang Nangbuat and Samut Prakan is approximately 92 miles respectively 147 kilometers.
By car or train, the actual journey to Samut Prakan is certainly longer, as only the direct route (as the crow flies) between Doembang Nangbuat and Samut Prakan has been calculated here.
Air line (approximately)
147 kilometers
80 nautical miles