Udo-Obong won the gold medal in 4 x 400 meter relay at the 2000 Summer Olympics. He also won the bronze medal in the same event at the 2004 Summer Olympics. In 2000, he was voted Sportsman of the Year, and won the Dele Udo prize for sporting excellence. He has also won the national championships on three occasions, and is a six-time medalist at a national sports festival is Nigeria.