The calculated distance (air line) between Samphanthawong and Thung Khru is approximately 8 miles respectively 12 kilometers.
By car or train, the actual journey to Thung Khru is certainly longer, as only the direct route (as the crow flies) between Samphanthawong and Thung Khru has been calculated here.
Air line (approximately)
12 kilometers
7 nautical miles