The calculated distance (air line) between Chalon-sur-Saône and Saint-Étienne is approximately 96 miles respectively 154 kilometers.
By car or train, the actual journey to Saint-Étienne is certainly longer, as only the direct route (as the crow flies) between Chalon-sur-Saône and Saint-Étienne has been calculated here.
Air line (approximately)
154 kilometers
83 nautical miles