Registration is now closed for the Chicago Marathon. I posted these charity partners and minimums in a previous post, but for those now scrambling for a marathon slot, I'm reposting.
Now that registration is closed, the minimums are higher in a lot of cases - because they can. But, remember that you get a lot of perks, often including gear check and training through programs like CARA or CES, so it's a win-win. Let's not forget that whole good cause thing, too.
Here is a list of the two top tiers of marathon partner charities. It should be noted that this is only the fundraising minimum, and does not include registration fees.