The calculated distance (air line) between Saint-Ouen-l'Aumône and Angers is approximately 164 miles respectively 264 kilometers.
By car or train, the actual journey to Angers is certainly longer, as only the direct route (as the crow flies) between Saint-Ouen-l'Aumône and Angers has been calculated here.
Air line (approximately)
264 kilometers
142 nautical miles