If you were planning to come to Chicago in October to participate in the Bank of America Chicago Marathon and have not already registered, you're going to have to settle for being an observer. As of today, the limit of 45,000 entrants has been reached and no more registrations will be accepted. You can't say I didn't warn you.

You do still have one slim chance of entering -- if you want to throw a little cash at a worthwhile cause, you may be able to obtain a spot through the marathon's Official Charity Program.