The calculated distance (air line) between Pran Buri and Samut Prakan is approximately 96 miles respectively 154 kilometers.
By car or train, the actual journey to Samut Prakan is certainly longer, as only the direct route (as the crow flies) between Pran Buri and Samut Prakan has been calculated here.
Air line (approximately)
154 kilometers
83 nautical miles