The calculated distance (air line) between Saint-Étienne and Le Péage-de-Roussillon is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Le Péage-de-Roussillon is certainly longer, as only the direct route (as the crow flies) between Saint-Étienne and Le Péage-de-Roussillon has been calculated here.
Air line (approximately)
32 kilometers
18 nautical miles