CHICAGO (CBS) — The registration period for the 2013 Bank of America Chicago Marathon, to be run this year on Sunday, October 13, is coming, and going, soon.

Registration for the event opens Tuesday at 12 p.m. online at and is open to the 45,000 runners.

The cost of entry is $175 for U.S. participants and $200 for participants outside the U.S. Registration will close when capacity of 45,000 is reached.

The Bank of America Chicago Marathon is one of the six world marathon majors, the most prestigious marathons in the world.

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