National Geographic Adventurer Walked 20,000 Kilometres Alone

Swiss adventurer and 2014 National Geographic Adventurer of the Year nominee Sarah Marquis likes to walk alone. From 2010-2013 she walked 20,000 kilometres from Siberia to Thailand, and then across Australia.

She was at the 2016 Banff Mountain Film and Book Festival with her book, "Wild By Nature." While she was here, we went for a walk with her in Banff National Park to talk about what it's like to take such a long journey, what she thinks about all those hours alone, and what it's like to take the last few steps.

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