Shigeru Aburaya, who placed fifth in the men's marathon at the past two World Athletics Championships, has decided not to compete in the upcoming Lake Biwa Marathon next month. Aburaya was not on the list, including 11 national and eight overseas invitees, released Thursday by the organizers of the March 7 race which begins and ends at Ojiyama Stadium in Otsu, Shiga Prefecture, and serves as the final qualifier for the Athens Olympics.