The calculated distance (air line) between Ta Khmau and Tbeng Meanchey is approximately 161 miles respectively 258 kilometers.
By car or train, the actual journey to Tbeng Meanchey is certainly longer, as only the direct route (as the crow flies) between Ta Khmau and Tbeng Meanchey has been calculated here.
Air line (approximately)
258 kilometers
139 nautical miles