Americans are Running Slower
This link suggests that we are overall running 9 - 10% slower. This is based on the results of large races with at least 2,000 participants. You have to wonder if this is really true. SO many people are now getting into running and entering races at an early point in their training. They are not too worried about a time but just want to finish. I think that is a good thing. The more people that are outside exercising the better.
So - lets all run FASTER and prove this "study" wrong!