Grammy-nominated artist to hike 3,000 miles across America Grammy-nominated artist Mike Posner discusses his major trek across the U.S. on ‘Fox & Friends Weekend.’ NEW You can now listen to Fox News articles! A man has been walking thousands of miles across Europe completely barefoot, aiming to achieve the official Guinness World Record for the longest barefoot journey by an individual — and his adventure has prompted a fitness professional's warning for others who also might contemplate