The calculated distance (air line) between Saint-Brice-sous-Forêt and Angers is approximately 170 miles respectively 274 kilometers.
By car or train, the actual journey to Angers is certainly longer, as only the direct route (as the crow flies) between Saint-Brice-sous-Forêt and Angers has been calculated here.
Air line (approximately)
274 kilometers
148 nautical miles