The calculated distance (air line) between Wijk bij Duurstede and Dordrecht is approximately 31 miles respectively 49 kilometers.
By car or train, the actual journey to Dordrecht is certainly longer, as only the direct route (as the crow flies) between Wijk bij Duurstede and Dordrecht has been calculated here.
Air line (approximately)
49 kilometers
27 nautical miles