The calculated distance (air line) between Ouderkerk aan de Amstel and Enschede is approximately 84 miles respectively 136 kilometers.
By car or train, the actual journey to Enschede is certainly longer, as only the direct route (as the crow flies) between Ouderkerk aan de Amstel and Enschede has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles