Felicity Aston completed the world's first solo crossing of Antarctica by a woman on Monday, nearly two months after departing from the continent's northern coast on November 25. Aston, 34, is also the only human ever to traverse the continent alone and under her own power. Previous solo explorers have used sails to help pull them across. Aston skied more than 1,000 miles, pulling her equipment by sled, and was aided only by two food drops. Farmer, 48, completed a 13,000-mile run from the North Pole to the South Pole on Friday. He set out on April 6, 2011, and averaged around 50 miles per day without a single day off. "This run will take a toll on my body for as long as I live," he said after finishing.