The calculated distance (air line) between Saint-Étienne and Saint-Genis-Laval is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Saint-Genis-Laval is certainly longer, as only the direct route (as the crow flies) between Saint-Étienne and Saint-Genis-Laval has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles