By Ben Pickman Attacked while training three decades ago, Passle Helminski, at 68, will finally have her shot. Just inside the front door of Passle Helminski’s home is a pair of Brooks running sneakers with years of miles and memories seeped into their fabric. Helminski, 68, used to wear the hot-pink size 8s zipping around her Erie, Pa., neighborhood, where she trained as a competitive racewalker. She laced them up for sessions at nearby Presque Isle State Park, too, where in the summer of 1993, she regularly strided out 13-mile loops with her older sister, Bonnie, starting before dawn. One st…