From Montréal:
Autoroute 10-East, (just past Sherbrooke) take autoroute 610-East direction Thetford Mines/EastAngus/Lac Mégantic. Go to the end of autoroute #610, left rte #112-East direction East Angus. On rte #112, exit direction East Angus / Lac Mégantic .  Go 100 mètres* and immedialy turn right on rte #253 direction Cookshire. At Cookshire, at flasing light*, turn left and at bottom of hill (200 mètres), just before railroad* make a right on  rte #212-East, direction La Patrie*.  
In Cookshire you are at  30 minutes, 43 km from Notre-Dame-Des-Bois, Au Vaillantbourg. 

From Québec:
Autoroute #73-South, rte #173-South to Saint-Georges, rte 204-west to Lac Mégantic, #161-South till Woburn and left on  rte #212-West to Notre-Dame-des-Bois.