The calculated distance (air line) between Kampong Speu and Tbeng Meanchey is approximately 166 miles respectively 266 kilometers.
By car or train, the actual journey to Tbeng Meanchey is certainly longer, as only the direct route (as the crow flies) between Kampong Speu and Tbeng Meanchey has been calculated here.
Air line (approximately)
266 kilometers
144 nautical miles