Sentier Frontalier SF1

Sentier Frontalier SF1 is a long-distance hiking route in Quebec’s Appalachian Mountains that follows the Canada–U.S. border, typically in day- and multi-day sections. Total distance is about 76 km (47 miles).

The route is oriented around a series of border-swath climbs and descents through dense boreal forest, with steep and rugged terrain in the border corridor. Expect route-finding effort: some stretches can be less maintained and require bushwhacking.

A common way to experience SF1 is to split it over two main days plus an evening warm-up. One example breakdown is about 6.9 km (evening), 32.3 km (Day 1), and 37 km (Day 2).

In the mid-route, the border trail corridor includes major ups and downs, including an area identified as “la montagne de marbre” with wide 180° views toward the U.S. side.

SF1 also reaches the Mont-Gosford area; one described approach is through the Mont-Gosford ecological reserve, and the climb is described as sustained over multiple kilometers to the summit area.

The SF1 line includes the “Trou du Diable” feature (a named low point/saddle described along the course after Gosford), then continues to the route’s border crossings/terminus area near Saint-Augustin-de-Woburn.

More information: Le Sentier Frontalier (SF1) - 76 km - Le Nomade écolo, Petit Mont Gosford map - PeakVisor