Brooks Running Global HQ. April 2021. “I’m gonna learn to suffer now in training, so that when it gets tough on race day, I know exactly what to do”. Mario Mendoza is a popular presence in the ultra trail running scene who has been going into uncharted territory lately with his world record attempts on the flat, monotonous spin of the treadmill belt. Undergoing extreme physical and mental preparation, Mario knew he would need to suffer–it was just up to the body to stay together throughout the beating. Unraveling at 50 Kilometers, Mario’s mind pushed past the pain to grab hold of a new personal best distance, but his hip flexors refused to go further en route to the world record.