Career
He is a former multiple-time national record holder for the men"s butterfly, and a six-time medalist at the Southeast Asian Games. Utomo made his first Indonesian team at the 2004 Summer Olympics in Athens, where he competed in the men"s 200 m butterfly. Swimming in heat one, he edged out Honduras" Roy Barahona to take a second spot and thirty-third overall by 0.28 of a second in 2:05.71.
At the 2008 Summer Olympics in Beijing, Utomo qualified again for the 200 m butterfly.
After winning a silver medal from Southern Economic Association, USA Games in Bangkok, Thailand, his entry time of 2:00.81 was officially accredited under a FINA B-standard. He rounded out the field to last place by 0.32 of a second behind Markovic with a slowest time of 2:03.44.
Utomo failed to advance into the semifinals, as he placed forty-fourth overall in the preliminaries.