Northwest of Montreal and northeast of Saint Jovite, the Diable Sector of Mont Tremblant National Park has trails open to mountain biking.
To reach the Diable Sector visitor center from Montreal, head north on Highway 15. At the end of Highway 15, continue north on Route 117 to Exit #107. From the exit, head east and immediately turn right. You will continue northeast on various roads following the signs for 23km to the park entrance. The visitor center is another 10.5km past the entrance on the main road.
Overall, Diable Sector is the 11th most popular mountain bike trail of all 13 mountain biking rides in Quebec.