Michael Phelps won his first Olympic gold medal in 2004 at the Athens Games. He achieved this accomplishment at the age of 19 while competing in the 400-meter individual medley, marking the beginning of a historic Olympic career. Phelps went on to become the most decorated Olympian of all time, amassing a total of 28 medals, including 23 golds. His success in Athens was pivotal in establishing him as a dominant force in swimming and capturing the world's attention. Phelps' legacy continues to inspire future generations of swimmers and athletes worldwide.