The calculated distance (air line) between Rouen and Pacy-sur-Eure is approximately 32 miles respectively 52 kilometers.
By car or train, the actual journey to Pacy-sur-Eure is certainly longer, as only the direct route (as the crow flies) between Rouen and Pacy-sur-Eure has been calculated here.
Air line (approximately)
52 kilometers
28 nautical miles