The calculated distance (air line) between Anlong Reab and Phnom Penh is approximately 138 miles respectively 221 kilometers.
By car or train, the actual journey to Phnom Penh is certainly longer, as only the direct route (as the crow flies) between Anlong Reab and Phnom Penh has been calculated here.
Air line (approximately)
221 kilometers
120 nautical miles