The calculated distance (air line) between Saint-Germain-lès-Corbeil and Le Mans is approximately 113 miles respectively 183 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-Germain-lès-Corbeil and Le Mans has been calculated here.
Air line (approximately)
183 kilometers
98 nautical miles