The calculated distance (air line) between Wijk bij Duurstede and Maastricht is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Maastricht is certainly longer, as only the direct route (as the crow flies) between Wijk bij Duurstede and Maastricht has been calculated here.
Air line (approximately)
127 kilometers
69 nautical miles