Dial in your perfect fit with the Mont Blanc BOA® ultimate long-distance trail running shoe. All the same Mont Blanc features you know and love with a dual-dial BOA® Fit System, which allows for micro-adjustments when you’re on the run. Two distinct adjustment zones give you a truly personalized fit. Tackle your toughest long-distance trail miles but keep them comfortable with our Standard FootShape™ Fit and Altra EGO™ MAX midsole foam. Whether you’re toeing the line at an ultramarathon or setting out on a hometown trail running adventure, the Mont Blanc BOA® is ready to fly over the most rugged terrain.