The calculated distance (air line) between Samut Prakan and Tha Maka is approximately 60 miles respectively 96 kilometers.
By car or train, the actual journey to Tha Maka is certainly longer, as only the direct route (as the crow flies) between Samut Prakan and Tha Maka has been calculated here.
Air line (approximately)
96 kilometers
52 nautical miles