Running Milestones

When I tell you that I am at the very beginning of my running journey you can take me quite literally! I've recently hit my first and 2nd running milestones. 1 full mile of running. Then 1.5 miles of running! Proud of myself I am. I have my realistic sites set on a 5K in October. Food and Wine Family Fun 5K at Disney to be exact. I have my crazy goggles on with sites set on the Disney Princess 1/2 marathon in February 2012. I find it a bit insane to think I can go from 1 mile runs to a 13 mile run...ever...but I've got a year to train and the desire to accomplish it. What's the worst that can happen. Right?