The calculated distance (air line) between Voisins-le-Bretonneux and Le Mans is approximately 100 miles respectively 160 kilometers.
By car or train, the actual journey to Le Mans is certainly longer, as only the direct route (as the crow flies) between Voisins-le-Bretonneux and Le Mans has been calculated here.
Air line (approximately)
160 kilometers
87 nautical miles