Usain Bolt is recognized as the fastest man in the world after setting a remarkable record in sprinting. He achieved fame for his extraordinary speed and performance in the 100 meters and 200 meters events, particularly during the 2008, 2012, and 2016 Olympics. His world record time of 9.58 seconds in the 100 meters solidified his status as a legendary sprinter, and his dominance in athletics has left a lasting legacy.