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