The calculated distance (air line) between Kampong Chhnang and Smach Mean Chey is approximately 121 miles respectively 194 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 Kampong Chhnang and Smach Mean Chey has been calculated here.
Air line (approximately)
194 kilometers
105 nautical miles