The calculated distance (air line) between Saint-Jean-de-la-Ruelle and Le Mans is approximately 77 miles respectively 124 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-Jean-de-la-Ruelle and Le Mans has been calculated here.
Air line (approximately)
124 kilometers
67 nautical miles