The calculated distance (air line) between Longueuil and La Haute-Saint-Charles is approximately 138 miles respectively 222 kilometers.
By car or train, the actual journey to La Haute-Saint-Charles is certainly longer, as only the direct route (as the crow flies) between Longueuil and La Haute-Saint-Charles has been calculated here.
Air line (approximately)
222 kilometers
120 nautical miles