The calculated distance (air line) between Chasse-sur-Rhône and Saint-Étienne is approximately 23 miles respectively 36 kilometers.
By car or train, the actual journey to Saint-Étienne is certainly longer, as only the direct route (as the crow flies) between Chasse-sur-Rhône and Saint-Étienne has been calculated here.
Air line (approximately)
36 kilometers
20 nautical miles