The calculated distance (air line) between Ampil Pram Daeum and Smach Mean Chey is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Smach Mean Chey is certainly longer, as only the direct route (as the crow flies) between Ampil Pram Daeum and Smach Mean Chey has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles