The best speed to run on a treadmill should be determined according to the constitution of the individual. The speed of the youngsters is best to be adjusted at 1 to 20 meters and to 10 meters per minute. In the elderly, the speed of the treadmill is adjusted at the fastest speed of 10 m / sec, the most from 5 m to 8 m / sec. As you can see, this young man is really a great force.