BIG BEAR, Calif. -- A Southern California teenager became the youngest person to successfully climb to the summit of the seven tallest mountains on Earth's seven continents, according to his website.

Jordan Romero, 15, called his mother Leigh Ann Drake on Saturday to confirm that he'd achieved his goal of reaching the top of Mt. Vinson Massif in Antarctica.

The Big Bear, Calif. native beat the record previously held by British climber George Atkinson, who completed the ascents at age 16 in May.

Romero's team began the climb Wednesday. Romero's Facebook page, "Find Your Everest," marked reaching the summit, but the climb is hardly over.

"It's in the books. The kid and team summit with all fingers and toes. Descent still to come then we celebrate," a post to the Facebook page read.

Romero completes the climbs with his father and stepmother.

"It's my dream we are following to the highest points on every continent," Jordan says on his blog. "I know it's a big goal and lucky for me my family is supporting me every step of the way."

At age 10, Romero climbed Mt. Kilimanjaro in Africa, and at age 13 he climbed the world's highest mountain, at 29,035 feet, Mt. Everest in Asia.

Drake declined further comment, saying the family is not seeking attention for the boy's achievement.