As she entered the Bird's Nest stadium in Beijing, Constantina Tomescu-Dita glanced back. Then, it hit her. The Olympic gold medal was about to be hers, and when she reached the stand, she could hardly contain her emotions. "I can't believe I have the gold medal in my hands," Tomescu-Dita said. "I was at the podium and I wanted to start crying." Just seven weeks after becoming the oldest Olympic champion, the 38-year-old Romanian will try to capture her second Chicago Marathon on Sunday. On the men's side, Daniel Njenga of Kenya will attempt to break through after three second and third-place finishes. And race organizers will simply hope for a relatively uneventful day after wild scenes the past two years. In 2006, men's champion Robert Cheruiyot of Kenya spent two nights in a hospital with a concussion after he slipped as...
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