The calculated distance (air line) between Sury-le-Comtal and Saint-Étienne is approximately 12 miles respectively 20 kilometers.
By car or train, the actual journey to Saint-Étienne is certainly longer, as only the direct route (as the crow flies) between Sury-le-Comtal and Saint-Étienne has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles