Aden ran for Somalia at the 1983 World Championships in Athletics and at the 1984 Summer Olympics. At the 1983 World Championships, he competed in both the men's 800 metres and men's 1500 metres, but did not advance to the finals in either distance. At the 1984 Summer Olympics, he finished in fifth place of the second heat in the men's 1500 metres, Pascal Thiebaut (FRA) won the heat and Sebastian Coe (GBR) was second. Aden did not advance to the finals. He competed in the men's 1500 metres at the 1988 Summer Olympics.