Marshall Ulrich - Dreams in Action

Marshall Ulrich - Dreams in Action: "The ultimate endurance athlete, Marshall Ulrich has run more than 100 foot races averaging over 125 miles each, completed 12 expedition-length adventure races, and climbed the Seven Summits (including Mt. Everest) all on his first attempts."

Science of Running: Understanding Stride Rate and Stride Length

Science of Running: Understanding Stride Rate and Stride Length: "This simple equation is a staple in sprinting and biomechanics material. It simply means that to see a change in speed you’ve either got to increase the ground you cover (stride length) or increase your turnover (stride frequency) or some combination of the two. The bottom line is that something has to change. But what is it that changes when we go faster?"