Hi AmandaMarie!
I'm also signed up to run in the DL half marathon. There's a group of us going. We're hooked now after just completeing the WDW Half Marathon earlier this month.
We're all staying at the Candy Cane Inn.
http://www.candycaneinn.net/
It's very nice and very close. I got a rate of $99 with AAA rate. They still had rooms when I booked 2 weeks ago, but they probably won't last too long, as I hear they're very popular.