Mountain bikers, meanwhile, can look forward to more than 100 kilometers of equally stunning action-packed routes that vary in toughness, going over paved streets and uneven forested alpine paths. The vigorous Stoneman-Glaciara, with an elevation gain of 4,700 meters over 127 km, is one of the area’s most challenging routes, though beginners and families will also be able to find paths more suited to their skill levels.