Sentier Frontalier is a hiking, biking, and horse trail in Maine and Québec. It is 5.1 miles long and begins at 2,826 feet altitude. Traveling the entire trail is 4.2 miles with a total elevation gain of 1,392 feet. Along the trail there is a camp site. The trail ends near Montagne de Marbre and Marble Mountain (elevation 2,976 feet).
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