He has won a total of six medals (three silver and three bronze) from the Southeast Asian Games since 2001 and has held numerous Indonesian records in long-distance freestyle (400 and 800 m) and in individual medley (200 and 400 m).

At the peak of his sporting career, Nasurion has also travelled extensively across Asia, Australia, and the United States to train for world-class swim clubs, and to further focus on his education, including his four-year stay at Chaffey College in Rancho Cucamonga, California.

Although he did not consider a heavy favourite, Nasution earned a bronze medal in the 200 m breaststroke at 2:20.59, just a full body length behind Malaysia's Elvin Chia and Thailand's Ratapong Sirisanont.

[10] He also accepted a full athletic scholarship to attend Chaffey College in Rancho Cucamonga, California, and later became a member of the school's swim team under head coach Mike Dickson.

While playing for Chaffey, he received California State Swimmer of the Year honours twice, posting wins and personal bests in three events: 500-yard freestyle (4:30.82), 400-yard individual medley (3:57.08) and 200-yard breaststroke (2:02.93).