The calculated distance (air line) between Oud-Beijerland and Amsterdam-Zuidoost is approximately 41 miles respectively 66 kilometers.
By car or train, the actual journey to Amsterdam-Zuidoost is certainly longer, as only the direct route (as the crow flies) between Oud-Beijerland and Amsterdam-Zuidoost has been calculated here.
Air line (approximately)
66 kilometers
36 nautical miles