The calculated distance (air line) between Angkor Meas and Phnom Penh is approximately 66 miles respectively 106 kilometers.
By car or train, the actual journey to Phnom Penh is certainly longer, as only the direct route (as the crow flies) between Angkor Meas and Phnom Penh has been calculated here.
Air line (approximately)
106 kilometers
57 nautical miles