The calculated distance (air line) between Saint-Macaire-en-Mauges and Le Mans is approximately 82 miles respectively 133 kilometers.
By car or train, the actual journey to Le Mans is certainly longer, as only the direct route (as the crow flies) between Saint-Macaire-en-Mauges and Le Mans has been calculated here.
Air line (approximately)
133 kilometers
72 nautical miles