On the morning of his 12th birthday, Dave McGillivray took off on a run from his home in Medford, Massachusetts.
The 6-mile route curled around a big pond, then back to his front door. Later that day, Aug. 22, 1966, McGillivray got the urge to do a second loop.
"So I ran 12 miles on my 12th birthday," he recalled.
The next year, he did 13 miles on his 13th birthday. Then 14 on his 14th.
"I kept doing it and never stopped," said McGillivray. "I've been doing ...Read full story