The calculated distance (air line) between Cologne and Wijk bij Duurstede is approximately 100 miles respectively 161 kilometers.
By car or train, the actual journey to Wijk bij Duurstede is certainly longer, as only the direct route (as the crow flies) between Cologne and Wijk bij Duurstede has been calculated here.
Air line (approximately)
161 kilometers
87 nautical miles