Runner Parker Stinson enjoys setting records. Whether personal bests or the United States record in the 25-kilometer distance, Stinson has been doing his record-setting in Saucony for the past six years. He's signed on for an additional four years, thanks, in part, to the excitement he and other elite runners have in the upcoming limited-edition Saucony Endorphin Pro+ racing shoe, the latest iteration of the lightweight propulsion Endorphin running line.