Lower Mill Brook is a hiking trail in Wayland, Massachusetts. It is within Schmidt Cr and Bertelsen. It is 0.7 miles long and begins at 139 feet altitude. Traveling the entire trail is 1.5 miles with a total elevation gain of 68 feet. Upper Mill Brook and another conservation are near the trailhead. Bertelsen, Schmidt Cr, Schmidt Cr, and another conservation can be seen along the trail.