The calculated distance (air line) between Stung Treng and Warin Chamrap is approximately 137 miles respectively 220 kilometers.
By car or train, the actual journey to Warin Chamrap is certainly longer, as only the direct route (as the crow flies) between Stung Treng and Warin Chamrap has been calculated here.
Air line (approximately)
220 kilometers
119 nautical miles