On October 17, 2015, the best obstacle racers in the world came together to battle it out in Oregonia, OH, USA at the premiere event in OCR. The nearly 10 mile course was littered with obstacles of all shapes and sizes, some natural and many man-made; sure to test the mettle of even the most resolute and talented athlete. More than 50 barriers stood between the start and finish line, complete with technical hills, heavy carries, steep terrain, freezing cold water, and lots of mud. The biggest battle the athletes would face was not the distance or the obstacles, but the bone-chilling temperatures. From the craziest waterslide in the sport of OCR to the memorable and brutal #skullvalley, here’s Mud Run Guide’s look back at the race that continues to define the sport of Obstacle Course Racing, the OCR World Championships. http://mudringuide.com/ocrwc