The calculated distance (air line) between Pho Thong and Bang Khun Thian is approximately 69 miles respectively 112 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 Pho Thong and Bang Khun Thian has been calculated here.
Air line (approximately)
112 kilometers
60 nautical miles