The calculated distance (air line) between Katwijk aan den Rijn and Hengelo is approximately 100 miles respectively 162 kilometers.
By car or train, the actual journey to Hengelo is certainly longer, as only the direct route (as the crow flies) between Katwijk aan den Rijn and Hengelo has been calculated here.
Air line (approximately)
162 kilometers
87 nautical miles