Run for a cause?

For the majority of you who do not know, last month Juan and I decided to run in the 2009 Montreal Marathon , which will take place on September 13, 2009. So essentially I'll run it 6 days before leaving for London.

I have decided that I would be open to the idea of running for a cause of some kind. I think it would make the physical toll and of course, hardest of all the mental discomfort, that much easier to bear if I can keep it in perspective by running for a cause of some kind.

Do any of you have ideas?

Dan Griswold, I'm thinking primarily of you when I pose that question as someone who has run for causes several times themselves.