Justin O'Neill produces the weekly radio program National Geographic Weekend with host Boyd Matson. Check it out on on SiriusXM satellite radio (XM channel 133 Sundays at noon), subscribe to the iTunes podcast, or stream it directly to your smartphone with Stitcher Radio.

Why a Thousand-Mile Hike Through the Mideast Ended After 160 Miles

Walking. Just putting one foot in front of the other. It seems like a simple task. And Dave Cornthwaite, veteran of eleven expeditions of a thousand miles or more, figured a walking adventure through Israel, Jordan, Palestine, and Egypt would be like his other thousand-mile adventures: hard at times but otherwise a fun way to…

500 Miles Through Water-Starved Outback Tests Adventurer’s Abilities

In the days and weeks after September 6, National Geographic explorer Sarah Marquis developed the odd habit of walking to her refrigerator, opening the door, and browsing through its contents. Then, closing the door, and she would go back about her day. Because the 43-year-old Swiss adventurer, who became a 2014 Nat Geo Adventurer of…

Trekking Australia’s Last Frontier: One Woman’s 500-Mile Survivalist Adventure

Sarah Marquis is drawn to solitude. That’s why she spent three years walking the estimated 10,000 miles from Siberia to Australia, and then across that continent’s big, empty backyard. And that’s why she’s on a four-month survivalist adventure in Australia’s Kimberley region she’s calling her “Dropped Into the Wild Corner” expedition. (Marquis was named a Nat Geo Adventurer…