Your edge on race day. Born from speed, The Endorphin Pro 2 was designed to help you step up your race pace, one step at a time. A superior fit and more heel support mean you can keep your eye on the finish line. And with our ultralight PWRRUN PB and a carbon fiber plate, there's no doubt you'll get there faster than e Saucony Endorphin Pro 2 Womens Running Shoe