102-year-old Kokichi Akuzawa is the oldest to climb Mt. Fuji (Credit: Guinness World Records)Climbing Mount Fuji, Japan's tallest mountain, is no small feat, even for experienced hikers. On August 5, 2025, the 102-year-old Japanese man became the oldest person ever to reach the summit, setting a new Guinness World Record. In the months leading up to the climb, Akuzawa faced several setbacks. The 102-year-old celebrated his feat by signing the visitors book at the Fujisan Sengen Shrine on the summit.