The calculated distance (air line) between Angkor Sar and Kampong Cham is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to Kampong Cham is certainly longer, as only the direct route (as the crow flies) between Angkor Sar and Kampong Cham has been calculated here.
Air line (approximately)
84 kilometers
45 nautical miles