The calculated distance (air line) between Bang Khun Thian and Nong Chok is approximately 32 miles respectively 51 kilometers.
By car or train, the actual journey to Nong Chok is certainly longer, as only the direct route (as the crow flies) between Bang Khun Thian and Nong Chok has been calculated here.
Air line (approximately)
51 kilometers
28 nautical miles