The Washington Posts Nell Henderson on the changing retiree The Washington Post's

By Nell Henderson
Washington Post Staff Writer
Wednesday, September 12, 2007; Page HE01

When the first Marine Corps Marathon took place, in 1976, the oldest runner to finish the 26.2-mile race was 58 years old. On the race's 30th anniversary last year, the oldest finisher was 82 -- one individual's testament to how Americans are aging differently than they used to. So who's "old" these days? The 60-year-old with twins in preschool? The 65-year-old launching a second career? The 70-year-old with no gray hair, no wrinkles and great cleavage?