Colin O'Brady, a 33-year-old American adventurer, just became the first person to cross Antarctica on a solo, unaided journey.

He capped off his 932-mile mission with an almost 80-mile ultramarathon, picking up speed as he raced toward the finish line ahead of schedule.

O'Brady said he tapped into a state of peaceful flow to end his record-shattering trek.

American adventurer Colin O’Brady just made it across Antarctica alive, alone, and way ahead of schedule.

That feat makes O'Brady the first person to ever cross the southern continent on a solo, unsupported mission without getting resupplied or using a kite.

"This is something that no one in history has ever accomplished, and people have been trying for 100 years," O'Brady told Business Insider before he started the record-breaking trek.

According to his live-tracking map, O'Brady reached his finish line on the Ross Ice Shelf on December 26. He quickly followed up with photo proof, confirming he'd skied 932 miles across the frozen desert, towing a sled full of gear.

Every other person who's tried that before has either given up or died. A British explorer, Louis Rudd, is also racing to accomplish the same lofty goal, but Rudd was still 73 miles from the finish line when O'Brady arrived on the edge of the shelf at the Leverett Glacier.

O'Brady has posted photos of his daily grind on Instagram throughout the journey. After his momentous finish, here are some highlights from his adventure at the bottom of the world.