The Sentier national in Bas-Saint-Laurent crosses the Bas-Saint-Laurent region from north to south. From Trois-Pistoles to Dégelis, the National Trail follows the Trois-Pistoles valley, runs along Lake Témiscouata and follows the Madawaska valley, connecting the St. Lawrence River to New Brunswick.

It crosses ten municipalities: Trois-Pistoles, Notre-Dame-des-Neiges, Saint-Éloi, Saint-Jean-de-Dieu, Saint-Clément, Saint-Cyprien, Sainte-Rita, Squatec, Saint-Juste-du-Lac and Dégelis. The route, totalling 144.4 km, is divided into 12 sections, each ranging from 8 to 15 kilometres in length.

Practical information:

• The Sentier national in Bas-Saint-Laurent is reserved exclusively for hiking and snowshoeing, with the exception of the first 6.5 kilometres of the Littoral Basque section, which is shared with the Route Verte.
• The difficulty levels of the sections range from easy to intermediate.
• Access to the Sentier national in Bas-Saint-Laurent is free, except for the portion that crosses Parc national du Lac-Témiscouata, managed by Sépaq.
• There is a parking area and an information panel at the start of each section.
• The Sentier national in Bas-Saint-Laurent is marked with red and white trail markers.
• The trail is not patrolled, so it is important to be in good physical condition and to have the proper hiking equipment.
• Dogs are welcome on sections that are not located within Parc national du Lac-Témiscouata. However, some municipalities require dogs to be kept on a leash.
• Hikers are asked to stay on the trail, respect the environment and carry out their waste.
• Shelters are available to hikers along the National Trail. To spend the night, reservations must be made in advance with PARC Bas-Saint-Laurent.