Eleven-year-old Galen Johnson, son of the famed Alaskan mountaineer, Dave Johnson, in 2001 became the youngest person to have climbed all of the United States' high points. The oldest, 77-year-old Cal Dunwoody, started with the country's highest point, 20,320-foot Mount McKinley in Alaska, and nine years later, in 1999, finished up with the lowest, Florida's 345-foot Britton Hill.
The speed record for climbing the highest point in each of the 50 states is 66 days, 21 hours, 47 minutes -- mind-boggling when you consider it takes most people three weeks just to climb McKinley. One hyperkinetic hiker hoofed up six high points in 24 hours. There's also a record for the first 50-year-old to climb all 50 and - well, you get the idea.
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