Chicago Marathon reaches capacity in record time

March 23, 2010 5:20:07 PM PDT
The Chicago Marathon is still months away, and the race has already set a new record.

Open registration closed Tuesday as 45,000 participants have already signed up to compete in the 26.2 mile race.

This is the earliest capacity has been reached in the race's history.

The capacity was met in 51 days, a full month ahead last year's record pace.

The marathon steps off October 10.