Goodbye, Golf Clubs. Hello, Hiking Boots and Kayak. Source: New York Times By ABBY ELLIN THEY call him “Elusive,” at least on the hiking trails. And that’s pretty much where Dave Roberts spends his time these days, crisscrossing the country by foot, by bike, even by kayak. Mr. Roberts, a retired teacher and software engineer, is on a mission to navigate the United States powered only by his two legs and two arms. Hotels and lodges are out of the question; he camps out at night and lugs 25 pounds of equipment — including his tent, sleeping bag and food — on his back. And oh yes: Did we mention he is 72 years old? “I expect to keep doing it until I get tired of it,” said Mr. Read More