The calculated distance (air line) between Stung Treng and Kampong Chhnang is approximately 124 miles respectively 200 kilometers.
By car or train, the actual journey to Kampong Chhnang is certainly longer, as only the direct route (as the crow flies) between Stung Treng and Kampong Chhnang has been calculated here.
Air line (approximately)
200 kilometers
108 nautical miles