The calculated distance (air line) between Sainte-Agathe-des-Monts and Laval is approximately 44 miles respectively 70 kilometers.
By car or train, the actual journey to Laval is certainly longer, as only the direct route (as the crow flies) between Sainte-Agathe-des-Monts and Laval has been calculated here.
Air line (approximately)
70 kilometers
38 nautical miles