(WSCR) The race has yet to begin, but the Bank of America Chicago Marathon already set a new record.

Registration for the 2012 Bank of America Chicago Marathon closed in record time Monday, as the maximum 45,000 participants signed up in six days for the 35th anniversary of the race.

The quick fill up is further evidence of the growing popularity of the marathon. Registration closed 25 days faster than the previous record established last year. A decade ago, the 2003 event closed in 35 weeks.

“Enthusiasm to run the Bank of America Chicago Marathon is at an all-time high with record breaking interest, and we plan to match that level of enthusiasm by providing participants with a first-class race experience at the 35th anniversary event,” said Bank of America Chicago and Illinois Market President Tim Maloney. “Bank of America is proud to create opportunity for 45,000 passionate runners to achieve their goals on race day and to deliver a world class event that has a profound economic and charitable impact on the Chicago community and beyond each year.”

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