The calculated distance (air line) between Chartres-de-Bretagne and Fouillard is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to Fouillard is certainly longer, as only the direct route (as the crow flies) between Chartres-de-Bretagne and Fouillard has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles