The Chicago Marathon, an AFF Gold Label race, is held every October and is one of the six World Marathon Majors. The race is limited to 45,000 runners

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The Chicago Marathon, an AFF Gold Label race, is held every October and is one of the six World Marathon Majors. The race is limited to 45,000 runners and only those who finish within 6½ hours are officially timed.

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Photo credit: © Jose More / VWPics / Alamy / Afripics
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