Pistorius has returned to South Africa following a ruling that cleared him to compete against able-bodied runners.

The athlete says he will compete in able-bodied meets in the coming weeks to try to qualify in the 400 meters for Beijing. But he told reporters Monday it will be difficult, and said the London Games four years from now might be his best shot.

If he doesn't reach the qualifying time in the 400 meters for Beijing, he still could be picked for South Africa's relay squad — but that squad also still has to qualify for this summer's Games.