Johnson was not a workout enthusiast until he turned 50, and has since run 20 marathons, KRQE-TV, Albuquerque, reported Tuesday, adding when he stopped running, he turned to cycling.
He credits his energy to regular exercise and healthy eating, saying, "I apologize to McDonald's but I haven't had a fast-food hamburger in 10 years. But I do like their coffee."
His birthday ride Monday was a training run for competition in this summer's National Senior Games in Cleveland, an event in which Johnson has competed annually since 1989, the television station said.
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