The calculated distance (air line) between Sam Roi Yot and Bang Khun Thian is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Bang Khun Thian is certainly longer, as only the direct route (as the crow flies) between Sam Roi Yot and Bang Khun Thian has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles