Hard runs happen. And out on the trails, hard moments can pop up in the middle of what might be an otherwise sublime run. No matter how beautiful the day or epic the scenery, everyone is prone to down moments, even professional trail runners. But the pros have also developed the mental toughness to keep on running. Whether you are faced with a hard climb, suddenly lose interest on a long training run or are in the middle of a race, having a can-do mantra or energizing philosophy built into your mindset can help keep you rolling. Scroll through the photos below to see how these top trail ultrarunners battle through the rough patches on a regular basis.