Your adventure begins in Tadoussac (215 km/135 mi. from Québec City, 475 km/295 mi. from Montréal), a great place to observe whales either during a cruise on the St. Lawrence or from the shore. Route 138 will take you to Les Escoumins, where you can not only participate in a whale-watching excursion, but also enjoy a virtual dive in the St. Lawrence at the Saguenay–St. Lawrence Marine Park.
Continue east on Route 138 to Baie-Comeau. From there, take Route 389 north to Manic-5 to admire the largest multiple-arch-and-buttress dam in the world