2010 Chicago Marathon

The 2010 Chicago Marathon took place on Sunday, October 10, 2010. Over 38,000 runners took part, the most in the race's history.

Kenyan Samuel Wanjiru won the men's event with a time of 2:06:24, beating Ethiopian Tsegaye Kebede by 19 seconds.Ethiopian Atsede Baysa won the women's event with a time of 2:23:40, beating Desiree Davlia by two minutes and forty seconds. Wanjiru's win likely clinched him the men's championship, but Kebede could still take it if he wins or places second in the New York Marathon; this is considered unlikely since it is only four weeks from the Chicago Marathon.Heinz Frei of Switzerland won the men's wheelchair event in 1:26:56 and American Amanda McGrory won the women's in 1:47:25.

Richard Whitehead of Great Britain broke his old world record for athletes with lower-limb amputations, with a time of 2:42:52.

Over six months before the race, organizers moved up the race's start-time by half an hour to 7:30 am to help prevent heat-related injuries like those that occurred in the 2007 when more than 300 runners were hospitalized. A red-flag warning was issued during the race, and sixty-five people were hospitalized, which is in line with other marathons. Despite the conditions, over 36,000 runners finished the 42.195-kilometer (26.219 mi) race, the most in Chicago Marathon history.

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