The calculated distance (air line) between Khŭm Ânsaông and Sihanoukville is approximately 141 miles respectively 227 kilometers.
By car or train, the actual journey to Sihanoukville is certainly longer, as only the direct route (as the crow flies) between Khŭm Ânsaông and Sihanoukville has been calculated here.
Air line (approximately)
227 kilometers
123 nautical miles