Country music singer Jo Dee Messina kicked-off race day festivities in Chicago on Sunday, October 7th singing the national anthem at the start line prior to the 30th Annual Chicago Marathon to what appeared to be a beautiful day. Messina finished in five hours and 45 minutes. Organizers closed the race course to runners who had not reached the midway point almost four hours after it began with temperatures as high as 88 degrees Fahrenheit, according to the race's Web site.

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