trail-tread-ball-bearing-rocks Published on September 7, 2016 in Trail Tread For Newbies: How To Keep The Rubber Side DownFull resolution (600 × 450) < Previous Next > Emelie Forsberg (right) and Maite Maiora are definitely mentally focused during the 2014 Matterhorn Ultraks. Photo: iRunFar/Meghan Hicks