Pre-Race Jitters – Upcoming 10K

So my first 10K ever is coming up in just three days. On Saturday, May 11, 2013, I will be participating in the 12th Annual ALS Lou Gehrig's Disease 10K in Coconut Grove, Florida. I'm going to be walking - not running the race. But still, I need to finish within the race's time parameters. I'm a little nervous about it, but at least I don't think that participating in a 10K is Mission Impossible...