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CHICAGO - Today is the start of Chicago's spring running season.
Runners are gearing up for the 42nd Annual Bank of America Shamrock Shuffle 8K run.
The race starts at 8:30 a.m. in Grant Park.
The classic race will return to the city's St. Patrick's Day celebrations with a green infused run and 2-mile walk throughout all of downtown.
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Many downtown streets will be closed off Sunday morning for the race.
Visit the Shamrock Shuffle website for more race information and results.