I worried about the same thing with my 5K. It was the Oklahoma City Memorial Marathon--We just did the 5K part. (see my Blog about it on April 25) But truth is there were just as many people behind us as there were in front of us. We passed a lot of people and some people passed us. It truly IS just about finishing the race. Not about the time so much. I will be rooting for you. YOU CAN DO IT!!