Last Updated on April 22, 2014 by Amir Rehman Usain Bolt won the 100 meters because of his speed endurance. I’ve said this all along, unless you are running a 40 yard dash or 50 meter sprint, sprinting the 100, 200, or 400 meters is all about speed endurance… reach your top speed, and maintain … Continue reading Usain Bolt 100m 10 meter Splits and Speed Endurance