The calculated distance (air line) between Château-Renault and La Chapelle-Saint-Mesmin is approximately 47 miles respectively 76 kilometers.
By car or train, the actual journey to La Chapelle-Saint-Mesmin is certainly longer, as only the direct route (as the crow flies) between Château-Renault and La Chapelle-Saint-Mesmin has been calculated here.
Air line (approximately)
76 kilometers
41 nautical miles