Jim Ryun is one of the greatest milers in history. In the 1960's, Ryun ushered in a new era of mile excellence, breaking the mile world record 3 times, and breaking the 1500 meter world record as well.

To this day, Ryun is still the youngest track and field athlete ever to become an Olympian. At just 17 years of age, Ryun qualifed in the 1964 Olympics, and this was in the summer before his Senior year of high school.

In 1965, Ryun famously ran a 3:55 mile as a senior in high school, which stood as the high school mile record for 36 years.

Ryun is undoubtedly one of the most influential and novel athletes of his time. Even more impressive, ESPN named him the greatest high school athlete of all time.

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