ROSS ICE SHELF, ANTARCTICA. -- Colin O'Brady, has become the first person to cross Antarctica alone and without any assistance.
O'Brady is from Portland, and he finished the 932-mile (1,500-kilometer) journey across the continent in 54 days. He lugged his supplies on a sled as he skied in bone-chilling temperatures.
O'Brady documented the entire journey on his Instagram page. It came to an end Dec. 26 after he covered the last 77 miles (124 kilometers) in one big push to the finish line.
His wife, Jenna Besaw, said she and O'Brady's family stayed up all night watching his progress using an online tracker and that he called as soon as he finished to tell them "I did it!"
Though others have crossed Antarctica, they had assistance. Either with reinforced supplies or kites helping them propel forward.
Another explorer, Lou Rudd, began a solo trek of Antarctica without help on the same day as O'Brady did. Rudd reached the South Pole on December 13 and is about 90% done with the trip.