David Birkner
Hiking Tips from a Peak Performer
Eighty-six-year-old David Birkner has an unparalleled passion for hiking and climbing
David Birkner has been a Wharton economics student, a naval officer stationed at Pearl Harbor, a travel agent, a freelance writer, a pioneering environmental activist, an outdoor guide, an elementary school teacher and a successful entrepreneur. But mostly, the 86-year-old walks – on all five continents, from the southernmost tip of South America to North Africa to…
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